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MacWorld's iMac Core Duo Benchmarks Debunked?

madgunde writes "Looks like MacWorld magazine was a little premature in reporting that the new Apple iMac Core Duo doesn't live up to Apple's speed claims. The folks over at MacSpeedZone have done some performance testing of their own that debunks MacWorld's results and shows that the new iMac Core Duo DOES live up to the hype. Not only did the new iMac wipe the floor with the old model in their tests, but using MacWorld's own test methodology would allow MacSpeedZone to conclude that the new Intel iMac is almost as fast as a PowerMac Quad G5. " I see only one way to solve this: Give me one. I'll run WoW on it, and decide.

187 comments

  1. Jeez, guys... by daveschroeder · · Score: 4, Insightful

    How many stories can we have about the Intel-based iMac's benchmarks?

    All of these "benchmarks" are true, as far as they go.

    Apple's original SPEC benchmarks are "true".

    Macworld's "real world" application benchmarks are "true".

    And now, MacSpeedZone's further tests of various tasks also are "true".

    I mean, obviously the new iMac isn't going to be 2 times faster for everything under the sun. In fact, Jobs even spoke to this fact in the keynote when he directly said that the tests were just for the CPU and that everything else, like disk I/O and other subsystems, weren't all twice as fast, but it was to illustrate the performance (and performance per watt) of the new Core Duo, which is indeed impressive by any measure.

    I think it's safe to say that the new iMac running native applications is definitely faster - sometimes up to twice as fast, and sometimes even more - than the iMac it's replacing. And Rosetta is so impressive that while non-native applications will run slower, it's damned good until native versions of those applications come out, too.

    And speaking of CmdrTaco's request for a WoW test on the new iMac...

    http://arstechnica.com/journals/apple.ars/2006/1/1 2/2478

    "It's fast, fast as in a superlative and not a comparative sense. One wonders why Steve Jobs didn't blow the crowd away with the saturated colors and excessive frame rates of WoW on an iMac. It loaded fast, and when the first character popped up in town, the frame rate never dropped below 60, and this was pretty much going full tilt in the settings."

    1. Re:Jeez, guys... by sammy+baby · · Score: 4, Funny
      "It's fast, fast as in a superlative and not a comparative sense. One wonders why Steve Jobs didn't blow the crowd away with the saturated colors and excessive frame rates of WoW on an iMac. It loaded fast, and when the first character popped up in town, the frame rate never dropped below 60, and this was pretty much going full tilt in the settings."


      Pfft. Do they really need to ask this question?

      The Jobinator has connected.
      QtElfASSASSINlord596: n00b


      (Apologies for the obvious fact that I've never played WoW, or the status messages above would look more realistic.)
    2. Re:Jeez, guys... by Arbo · · Score: 1

      It seems odd that they're touting the processor so much on this Mac as relates to WoW. I've always thought of WoW as being a generally GPU intensive app. While the CPU handles the commands in WoW and such -- there's very little in the way of physics or the like because of the nature of an MMO -- it can't really handle that kind of effect distributed thousands of times in a crowded city.

    3. Re:Jeez, guys... by Anonymous Coward · · Score: 0

      WoW is, unfortunately, very CPU bound.

    4. Re:Jeez, guys... by AKAImBatman · · Score: 3, Funny

      Mod: QtElfASSASSINlord596 was kicked for violating the Terms of Service, section "Titles".
      Taco: Rough, aren't they?

    5. Re:Jeez, guys... by f0dder · · Score: 5, Funny

      With over a million zealots hanging on your every word.

      Depending on WoW's login server to give a Keynote presentation is not a wise decision.

    6. Re:Jeez, guys... by iwsnet · · Score: 1

      eMachines just launched new desktops with all AMD chips. Maybe Apple will have to switch over to AMD to get real performance in upcoming Macs.

    7. Re:Jeez, guys... by Ravatar · · Score: 3, Funny

      Hahaha, I can see it now:

      Your position in the queue: 1430
      Estimated Time: 2 hours 15 minutes

    8. Re:Jeez, guys... by clarkcox3 · · Score: 2

      You obviously haven't played WoW on a slow CPU. WoW is *very* processor hungry.

      --
      There are no tiger attacks in my area and it's all because this rock I'm holding keeps the tigers away.
    9. Re:Jeez, guys... by Kadin2048 · · Score: 1

      This is not entirely a response to your post, but it's related so I thought I'd ask anyway ...

      Does anyone know where there is a good description of how the WoW client and server interacts? Or is it all kept under wraps by Blizzard?

      I'm not particularly interested in hacking (or cheating) or anything else malicious, I'm more just curious how much work gets done on the client end versus the server end.

      For instance, let's say you shoot an arrow or something: when you miss in the game, you'll actually see the arrow/bullet/whatever miss it's target. Is the drawing of the arrow's flightpath and other physics modeling stuff done on the client, and the server just communicates where it's a hit or a miss, and everybody's computer figures the rest out separately? Or does it actually communicate the flightpath, so everyone sees the same thing (as an FPS-style game would)?

      That's just an example; I guess what I'm really wondering is 'how thick is the client?' And whether there's anything out there about it that's not hugely technical but not just a game review either.

      Thoughts?

      --
      "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
    10. Re:Jeez, guys... by MysteriousPreacher · · Score: 1

      I don't know if this helps but I've noticed what happens when the connection to the server is lost.

      Generally you can still run around within the world. When you try to use an ability (such as casting a spell though) you will see the initial animation for the spell casting but the spell never actually casts. I've had a few experiences where my connection was lost and I didn't realise it. I would continue running around the world and after a while, realised that there were no monsters or players visible. In some cases, players would still be visible but would continue running in whatever direction they were running in before the connection was lost.

      --
      -- Using the preview button since 2005
  2. WoW not such a good benchmarking program... by eldavojohn · · Score: 1, Offtopic
    I see only one way to solve this: Give me one. I'll run WoW on it, and decide.
    I hate to break it to you, but the only lag you'll experience from either setup will probably be server side (depending on your realm). I mean, my P4 3.0 Ghz with 2 gigs of RAM and a 6600GT lags sometimes and runs fluid as real life at others.

    Many of the users of WoW have done all they can to reduce the lag on their end. It's time for Blizzard to step up to the plate and use the massive amounts of money we give them monthly to get some better servers. I'm not so good with math but 5,000,000 users paying 12 dollars a month is .... $60 million?
    --
    My work here is dung.
    1. Re:WoW not such a good benchmarking program... by j.bellone · · Score: 1, Interesting

      Many of the users of WoW have done all they can to reduce the lag on their end. It's time for Blizzard to step up to the plate and use the massive amounts of money we give them monthly to get some better servers. I'm not so good with math but 5,000,000 users paying 12 dollars a month is .... $60 million?

      Finally someone that understands why the damn servers always lags. I am tired of hearing "Add more ram to your system" or "My game doesn't lag!" Which is total bullshit because unless you're inside their damn network you have lag. I totally agree with you though, you'd think all that money and they could upgrade some of their servers a bit.

      --
      I'm f#$king magic!
    2. Re:WoW not such a good benchmarking program... by oc255 · · Score: 1

      The texture loading and unloading can be hard on the disk even with lots of RAM. Regardless, my powerbook's two fans both start revving while playing WoW on it. It's not something I do often since I have a gaming PC.

      I have a 17" 1.33ghz older model powerbook with 1gb RAM. All detail settings down, resolution doesn't affect much.

      I too would love to see WoW on it as my own type of comparison.

    3. Re:WoW not such a good benchmarking program... by Anonymous Coward · · Score: 0

      For the Whored!

    4. Re:WoW not such a good benchmarking program... by God'sDuck · · Score: 5, Funny

      It's time for Blizzard to step up to the plate and use the massive amounts of money we give them monthly to get some better servers. I'm not so good with math but 5,000,000 users paying 12 dollars a month is .... $60 million?

      most of it goes to NPC salaries. [/deadpan]

    5. Re:WoW not such a good benchmarking program... by Anonymous Coward · · Score: 0

      You don't get it.

      Even if the serverside lag gives you a 4000ms ping, you can still compare the FPS between two machines as a test of performance. FPS doesn't have anything to do with lag.

      When you play a game with high end requirements on a bad computer, the game doesn't "lag". It stutters! Well it might lag in few loading situations, but generally lag is related to latency only, while FPS is tied to system performance only.

    6. Re:WoW not such a good benchmarking program... by laffer1 · · Score: 1

      While I agree blizzard needs to do work, quite a bit IS ON THE CLIENT. In general, WoW is faster in terms of FPS on a Windows box and the ping is better on a Mac. Here's some real life data. My wife and I both play WoW at home on different computers.

      Hers:
      PowerMac G4 Dual 867mhz 1.25gb ram ATI Radeon 9800 AGP 4x 128mb (aftermarket) 160gb IDE hdd (upgraded) OSX 10.4.4

      Mine:
      Dell Precision 650 dual xeon 2.0ghz 1gb ECC ram ATI AIW 9600 xt 128mb AGP 8x U160 SCSI 73gb seagate hdd Windows XP Pro SP2 + all patches

      Her ping is up to 10 times better than mine. Usually she has a ping less than 100ms, often in the 60s. Connecting to the same server, I get 200-300ms ping. On bad days, she gets 100ms and i've gotten over 1000ms. However, my average frame rate with the same settings is 60fps while hers is 12fps!!!! Her laptop (an iBook G4 1.2 ghz) gets about 5-10fps on very low settings but her ping is about the same as her desktop. I've talked to other windows users and they also report similar pings to mine in the area.

      Now why is there such a difference between the two systems on the same network. Both machines have a gigabit ethernet connection to our switch which runs into a freebsd router thats connected to my cable modem. Her computer is actually on an older ethernet cable that is 25 feet long (vs mine on 6ft). I have an intel onboard card on the pci-x bus and she has the apple built in POS network card.

      Its either the game network code or the underlying OS network stack that is the difference. I find the framerate difference rediculous as well. Both machines can run enemy territory at 60fps or higher at 1024 x 768 even with the cpu differences. The ping is very similar on ET for both machines to the same server.

    7. Re:WoW not such a good benchmarking program... by alc6379 · · Score: 1
      Not quite.

      Lag can manifest itself as stuttering in certain situations. When you're looking at an MMORPG, there's tons of low-latency requirement issues to look at. Your position, and the positions of everything around you are constantly being sent to your gaming client. So, if you're not getting data quickly enough, of course your game's going to be "slow".

      --
      I don't moderate anymore. Karma penalty for 90% fair mods? Can I mod that unfair?
    8. Re:WoW not such a good benchmarking program... by BlueTooth · · Score: 1

      Still not quite. As in an a FPS, an MMO game client typically interpolates between position updates from the server. High latency causes characters to appear to "teleport" if they vear off of the path that the client predicted they would follow. In an FPS, this can cause a direct hit, as percieved by the client, to actually be a miss. In a game like WoW, you don't need accuracy to target a mob and the only "slowness" in the client interface manifests itself when trading items with the world or other players (which I can only assume involves some transactional DB).

      --
      SPAM
    9. Re:WoW not such a good benchmarking program... by Yahweh+Doesn't+Exist · · Score: 1

      >...card on the pci-x bus and she has the apple built in POS network card.

      I'd be careful what I called POS if I were the one getting 1000ms pings.

    10. Re:WoW not such a good benchmarking program... by Anonymous Coward · · Score: 0

      Why, because you feel hurt that he used POS and apple in the same sentence? It's a piece of shit network card. Get over it.

    11. Re:WoW not such a good benchmarking program... by Zero+Sum · · Score: 1

      TCP/IP stack

      --

      Zero Sum (don't amount to much). [root@localhost]

    12. Re:WoW not such a good benchmarking program... by Lord+Kestrel · · Score: 1

      You never played Diablo2 did you? If you had, you'd know Blizzard doesn't give a rats ass about their customers, they just try and keep you satisfied just enough to stay around, but not so much that they actually have to spend any money for it.

  3. Two possible slashdot headlines from next week by Spazntwich · · Score: 4, Funny

    MacWorld uncovers secret Apple contributions to MacSpeedZone.

    OR

    Prices for flying pigs drop dramatically as supply increases after Apple products live up to claimed bench marks.

    1. Re:Two possible slashdot headlines from next week by varmittang · · Score: 3, Funny

      So where can I pick up my pig?

      --
      -----BEGIN PGP SIGNATURE-----
      12345
      -----END PGP SIGNATURE-----
    2. Re:Two possible slashdot headlines from next week by Spazntwich · · Score: 1, Offtopic

      I hear they're going to be bundled with Duke Nukem Forever.

    3. Re:Two possible slashdot headlines from next week by Ezku · · Score: 2, Funny

      I'm afraid we're temporarily out of stock for pigs, sir. As inexplicable as it is, it would seem that they all grew wings overnight and escaped.

    4. Re:Two possible slashdot headlines from next week by Anonymous Coward · · Score: 0

      i've got the same combination on my luggage!

    5. Re:Two possible slashdot headlines from next week by Duckspeak · · Score: 0

      You don't need to pick them up--they fly, geez.

  4. Nothing settled until Pro Apps... by gsfprez · · Score: 5, Interesting

    i'm completley convinced that for using email, web browser, iPhoto, etc.. that the new iiMacs wipe the floor with comparably priced PPC macs.

    what i want to know - and what holds me back from moving to an iiMac from my DP g5 1.8 - is

    1. how they will perform when rendering with Compressor
    2. how much faster is FCP when hooked up to similar disk packs (like cheap desktop FW400 raids)
    3. Will i still be able to run background processing tasks like Compressor and handbrake yet get good foreground performance so i can email, websurf and get on with life while waiting for those 30-1 hour long tasks, instead of walking away from the machine, lest i get tempted to use it and really slow down the renders.
    4. Will Aperture stop sucking performance wise?

    --
    guns kill people like spoons make Rosie O'Donnell fat.
    1. Re:Nothing settled until Pro Apps... by ArbitraryConstant · · Score: 1

      "Will i still be able to run background processing tasks like Compressor and handbrake yet get good foreground performance so i can email, websurf and get on with life while waiting for those 30-1 hour long tasks, instead of walking away from the machine, lest i get tempted to use it and really slow down the renders."

      With the second core, I imagine it has a decisive advantage for things like this. The reviews I've seen all make a point of saying how responsive the machine is.

      --
      I rarely criticize things I don't care about.
    2. Re:Nothing settled until Pro Apps... by God'sDuck · · Score: 1

      1: dunno.
      2: dunno.
      3: sure. any dual+ core helps with things like that, if you stay off the swap hard drive. but what really helps things like that is the old-fashioned trick of renicing: http://www.versiontracker.com/dyn/moreinfo/macosx/ 9473.
      4: ha! no.

    3. Re:Nothing settled until Pro Apps... by kfg · · Score: 1

      i'm completley convinced that for using email, web browser, iPhoto, etc.. that the new iiMacs wipe the floor with comparably priced PPC macs.

      Yeah, the PPCs are faster than human perception, and the Intels are faster than that.

      KFG

    4. Re:Nothing settled until Pro Apps... by Anonymous Coward · · Score: 0

      Yes, but my amp goes to 11.

    5. Re:Nothing settled until Pro Apps... by mattkime · · Score: 1

      Does it matter? the intel Macs top out at 2GB ram. Your DP G5 can handle at least 4GB - and you need it if you're running those apps.

      --
      Know what I like about atheists? I've yet to meet one that believes God is on their side.
    6. Re:Nothing settled until Pro Apps... by Rosyna · · Score: 1

      Well, I guess 16gigs max is at least 4GB (8GB with the current size of chips).

    7. Re:Nothing settled until Pro Apps... by disappear · · Score: 4, Interesting

      As far as (3), with HandBrake's Intel build available on the web site, I'm able to encode at 30fps+ and still have one processor free to do other tasks. Subjective performance in my foreground tasks is excellent.

      Or to put it another way, I was able to rebuild my darwinports on one CPU and at the same time get better peformance out of Monster Fair (a pinball game) running via Rosetta than I managed at native on my 1ghz 12" PowerBook when I needed to quit every other app on the system on the PowerBook.

      A lot of the help is more memory --- 2gb versus 1.25gb on the PowerBook (each system was maxed out) --- but a second core makes a big difference, too. No doubt about it, I'm impressed by system performance. I hadn't thought that Monster Fair would be useable running via Rosetta, let alone faster, let alone faster while compiling software on the other CPU.

    8. Re:Nothing settled until Pro Apps... by JohnsonJohnson · · Score: 5, Informative

      what i want to know - and what holds me back from moving to an iiMac from my DP g5 1.8 - is

      In general there's no reason to do so, the iMac Core Duo should be roughly equivalent in speed to a dual G5 system right now. Having the cores on a single chip gives it a slight advantage but the power dissipation aside the G5 is a very efficient chip and matches up well with the new Intel offerings on a clock for clock basis.

      The Intel iMacs are not a Power Mac replacement, and shouldn't be considered as such, they bring roughly Power Mac levels of performance to the iMac and Powerbook lines, but do not surpass it.

      More specifically...

      1. how they will perform when rendering with Compressor

      Probably about the same or even in favor of the G5. Compressor's code is highly dependent on the SIMD (SSE or Altivec) unit and the G5's Altivec unit, or the G4's for that matter is generally considered a better SIMD implementation on a general purpose microprocessor than SSE.

      2. how much faster is FCP when hooked up to similar disk packs (like cheap desktop FW400 raids)

      Again there will probably be no significant difference between the two platforms, since a the Core Duo is roughly twice as fast as the G5 iMac, but so is a dual G5.

      3. Will i still be able to run background processing tasks like Compressor and handbrake yet get good foreground performance so i can email, websurf and get on with life while waiting for those 30-1 hour long tasks, instead of walking away from the machine, lest i get tempted to use it and really slow down the renders.

      Multitasking performance is as much a function of the operating system's scheduler as the hardware. Again you would see little difference between the two machines. The G5's ability to hold more memory actually gives it a higher level of potential performance when the memory is maxed out than the iMac.

      4. Will Aperture stop sucking performance wise?

      Short answer, no. Aperture's performance is largely a function of Core Image which depends on the graphics card and system bus moreso than the CPU.

      In general if you need an immediate speed upgrade a quad core G5 with a lot of memory is what you should purchase, otherwise wait for the workstation class Intel machines (MacMac? Following the PowerBook -> MacBook convention)

    9. Re:Nothing settled until Pro Apps... by DrFrob · · Score: 1

      Off Topic: You know, my buddy teaches intro to writing and he made a reference to that and nobody in his class got it. Those poor kids...

    10. Re:Nothing settled until Pro Apps... by cailyoung · · Score: 1

      Unfortunately, until March, we won't know because FCP and its ilk simply do not run under Rosetta.

    11. Re:Nothing settled until Pro Apps... by dubiousmike · · Score: 2, Interesting

      I will not believe that the pro apps work well as long as they run using Rossetta.

      All I know is that today I used Compressor to turn a 2.5 hour full res quicktime into an mpeg-4. Usually it would be on a dual proc g5 with 4 gigs or ram and it would take almost two hours. On a dual proc xserve hooked up to a RAID 5 xraid via fiber, it took 34 minutes. 34 MINUTES! I was beside myself. I can't wait for my quad core g5 to get in next week so I can see how fast I can encode for the air and for web with that. Screw distributing the rendering over the network, 34 minutes is nothing. I can't wait to throw a dvd to see how handbrake works with the quad core via fiber.

      I really think that the disk i/o must be a HUGE contributing factor. And you know what, my 17" powerbook with 2 gigs of ram shows handbrake running at about 24 frames per second with about 7 other applications running in the foreground.

      We bought 10 imac s for our fcp lab last year. According to our rep, nothing should hold us back from the purchase...until we decided we needed the machines to expand (to accomodate for fiber cards). Now the imacs will be used for internet only. They will be useless in our workflow...

    12. Re:Nothing settled until Pro Apps... by admactanium · · Score: 1
      Does it matter? the intel Macs top out at 2GB ram. Your DP G5 can handle at least 4GB - and you need it if you're running those apps.
      actually i run handbrake quite a bit recently and i usually have the activity monitor open. handbrake doesn't use very much ram at all. it uses the cpu a LOT 270% on my quad. but it has a VERY small ram footprint.
    13. Re:Nothing settled until Pro Apps... by noidentity · · Score: 2, Interesting

      "I hadn't thought that Monster Fair would be useable running via Rosetta, let alone faster, let alone faster while compiling software on the other CPU. "

      Remember that programs which use OS services to perform processor-intensive operations won't spend much time in the actual program code, thus won't be affected much by Rosetta emulation. They become glorified scripts that delegate the real work to the native OS code. It was the same with the switch from 68K to PowerPC in 1994, where many 68K programs ran at full speed because things like graphics blitting were done via OS calls, and thus ran PowerPC native.

    14. Re:Nothing settled until Pro Apps... by Anonymous Coward · · Score: 0

      Is this some kind of elaborate reworking of the Kottke troll?

      Just checking :-)

    15. Re:Nothing settled until Pro Apps... by disappear · · Score: 1

      I understand that; I thought that a full-screen game might be less reliant on OS calls and more reliant on its own code.

    16. Re:Nothing settled until Pro Apps... by Weedlekin · · Score: 1

      "I will not believe that the pro apps work well as long as they run using Rossetta."

      They don't run under Rosetta either -- in fact, the Pro apps don't run at all on Intel Macs at the moment. Apple claim there will be Intel-compatible versions in March, but how well optimised they'll be is something we won't know until they appear.

      --
      I'm not going to change your sheets again, Mr. Hastings.
  5. What was MacWorld's flawed logic? by httpamphibio.us · · Score: 1

    "Using Macworld's logic we could argue, given the data above, the Quad G5 Power Mac is only 14% faster when running some of Apple's own applications. We think that this is misleading, as we pointed out."

    The article mentions that their logic was flawed, but they don't explain the logic problems with MacWorld's article. After looking at it I can't really seem how they came to the "14% faster" conclusion.

    Can anyone else explain this?

    --
    sig.
    1. Re:What was MacWorld's flawed logic? by be-fan · · Score: 4, Informative

      That's the point of the article. The Macworld article never considered processor useage. They said the new Intel Mac is "10-20% faster" without considering whether their benchmarks used the full capacity of the processor. They claimed that Jobs' statement that the new Mac was "2x faster" was wrong because they got smaller speedups. What this article s howed is that if you used Macworld's methodology (showing benchmark results without showing processor usage) you could argue that the quad-core G5 is only 14% faster than the Intel iMac running Quicktime. They're not saying that such a conclusion is correct, they're using it as an example to show what conclusions you can arrive at if you use Macworld's logic.

      The basic problem was that Macworld's benchmarks were not CPU benchmarks and didn't make full use of the second core in the Intel Mac. The '2x' number Apple said was for the CPU --- even SJ mentioned that it doesn't mean apps will be 2x faster since the disks and everything else are the same. This article shows that in cases where the benchmark is CPU bound, the new Intel Mac can be almost twice as fast.

      --
      A deep unwavering belief is a sure sign you're missing something...
    2. Re:What was MacWorld's flawed logic? by rjstanford · · Score: 5, Insightful

      Its referring to tests that don't max out the CPU anyway, and therefore presumably have bottlenecks in some other part of the system. Here's a more rediculous example using the same theory:

      Test: Compressing and sending a 16MB file over the network
      iMac: 83 seconds (cpu usage 23%)
      quad: 84 seconds (cpu usage 11%)

      Wow! The iMac is faster than the quad! Of course, in reality it was working much harder to accomplish the same task (compressing at a bandwidth-limited speed). The articles point - and it is very poorly written, I will agree - is that this kind of test is crap.

      The Macworld test used the same theories in the other direction. After all, if you perform a task that takes the old G5 iMac 20 seconds but uses 99% of its CPU, and takes the new intel iMac 19 seconds but only uses 45% of its total CPU power, I think you'd say that the iMac was more than 5% more powerful, right?

      Admittedly if all you ever do is one task at a time, you wouldn't notice the difference. Considering that many people like to do multiple tasks - watching the recent keynote in a background window while doing some other work in a foreground window, for example - this is not an inconsequential point.

      That brings up the example from the linked MacSpeedZone article:

      Encoding one QuickTime movie:
      intel dual core iMac: 97.02 seconds (87% CPU)
      g5 quad core powermac: 84.85 seconds (42% CPU)
      advantage g5: 14% faster

      Encoding two QuickTime movies:
      intel dual core iMac: 176.60 seconds (100% CPU)
      g5 quad core powermac: 86.25 seconds (87% CPU)
      advantage g5: 105% faster

      Even that's a little misleading, since the quad still had spare processor bandwidth. This is why a lot of benchmark tests are designed to test each piece separately, spinning them up to 100%. Of course, real world tests are great as well - but only if your usage actually parallels those tests.

      --
      You're special forces then? That's great! I just love your olympics!
    3. Re:What was MacWorld's flawed logic? by shotfeel · · Score: 1

      Yes, I remember all those benchmarks from the past where the final line went something like,

      "The dual 1.2 GHz Mac was barely 20% faster than the 1 GHz single processor machine... ...OX X multiprocessing sucks."

      -or

      "According to Apple this dual processor Mac should be smoking this single processor Pentium system, but its barely keeping up..."

      Never seeming to understand what happens when a single-threaded benchmark runs on a dual processor/core system.

    4. Re:What was MacWorld's flawed logic? by mean+pun · · Score: 1
      The article mentions that their logic was flawed, but they don't explain the logic problems with MacWorld's article. After looking at it I can't really seem how they came to the "14% faster" conclusion.

      The problem with the Macworld benchmark is that many of the applications in it are not CPU bound (the disk, the graphics card, or even the CD drive (iTunes rippling) is likely the bottleneck). Other applications do not have enough parallelism to exploit all processing power, so are not using all available processors/cores. That's not a flaw on its own, but you have to explain what these results mean, and the Macworld article did a poor job; they were much more interested in in claiming that Jobs was wrong.

      Not that MacSpeedZone is much better, but that's a different story.

    5. Re:What was MacWorld's flawed logic? by godawful · · Score: 1

      i've read fairly regularly on this site that it takes a good 20 minutes to copy a 16 meg file!

      --
      Live EVERY week... Like it's Shark Week
    6. Re:What was MacWorld's flawed logic? by TheJediGeek · · Score: 2, Informative
      It's still a little misleading. If the average Mac fanatic hears in the Stevenote that the InteliMacs are "twice as fast" and so he runs out and gets one.
      He then doesn't see much of a performance increase when he uses it for whatever he does with it. Will he be satisfied by some Apple PR guy saying "But look! It's not using as much of the CPU as your old Mac! That means it's MUCH faster!"
      The average Smoky McPotts Mac freak won't really care if it's using less of the CPU if it still takes as long to do the same stuff as before.

      There's WAY too much flawed logic comparisons going on right now to make ANY sense of it. Benchmarks matter to a certain point, but what really matters is how long it takes to do stuff that you use it for. If it takes forever to do most of the tasks you want it to do, it doesn't matter what kind of benchmark scores it got by which review site.

    7. Re:What was MacWorld's flawed logic? by joeyblades · · Score: 2, Insightful

      Yes, but who really cares about CPU benchmarks?

      My 2.6GHz Thinkpad smokes my 1.0GHz G4 iMac in CPU benchmarks. I use them both every day for many hours a day and for many common tasks. However, in spite of the CPU performance difference, the iMac seems faster (i.e. it's more responsive AND my productivity/output is higher).

      Now I'm sure that there are some applications (that I never use) where the standard benchmarks do give meaningful results... However, for the applications that I use, I find most benchmarks to be a meaningless waste of time (with the possible exception of the old ByteMark).

      There's an old saying about standards, but I think it applies equally well to benchmarks, so I'm going to co-opt it...

      The nice thing about benchmarks is that there are so many to choose from...

      The point being is that everyone has different expectations and different ways of using computers. Alternatively, the point may be that benchmarks are just another way of lying with statistics...

    8. Re:What was MacWorld's flawed logic? by Moofie · · Score: 1

      "The average Smoky McPotts Mac freak"

      What ARE you talking about?

      --
      Why yes, I AM a rocket scientist!
    9. Re:What was MacWorld's flawed logic? by drsmithy · · Score: 1
      I use them both every day for many hours a day and for many common tasks. However, in spite of the CPU performance difference, the iMac seems faster (i.e. it's more responsive AND my productivity/output is higher).

      I find this amazing, because I've always found OS X to be sluggish and unresponsive on anything short of top-end G5s (and even then, it's relatively slow).

      My 1Ghz iBook, while usable running Mail and a few tabs in Safari, gets extremely sluggish when asked to do anything more - and this is with 768Mb RAM and a 5400rpm hard disk. Having used the same sort of iMac you're talking about, I find it hard to believe you could possibly call it more responsive than the Thinkpad (or even a sub-Ghz PC). Sounds to me like your PC is broken.

    10. Re:What was MacWorld's flawed logic? by tongodeon · · Score: 1

      Yep, that's what I explained last week. MacWorld doesn't understand that "two equally fast cores" does not mean "twice as fast" when you're running single-threaded applications.

    11. Re:What was MacWorld's flawed logic? by BasilBrush · · Score: 0, Troll

      Sounds to me like your PC is broken.

      It's probably got Windows on it.

    12. Re:What was MacWorld's flawed logic? by be-fan · · Score: 1

      Yes, but who really cares about CPU benchmarks?

      People whose apps are CPU-bound? Eg: the SPEC results for the Core Duo are a pretty good indicator of GCC performance. The Core Duo is 3x as fast as the iMac G5 in SPECint, and according to the xcode mailing list, the Core Duo iMac is just a hair slower than a quad. There are lots of apps that are CPU-bound: 3D rendering, many scientific codes, etc. Things like SPEC are a good indicator for the performance of such apps.

      --
      A deep unwavering belief is a sure sign you're missing something...
    13. Re:What was MacWorld's flawed logic? by be-fan · · Score: 1

      OS X's multithreading was improved a lot in Tiger, with finer-grained locking.

      --
      A deep unwavering belief is a sure sign you're missing something...
    14. Re:What was MacWorld's flawed logic? by joeyblades · · Score: 2, Informative
      > There are lots of apps that are CPU-bound:...

      You missed my point - perhaps I was too subtle.

      I challenge your assertion: there are NOT a lot of apps that are cpu bound (or rather, the percentage of apps and users of those apps is a fraction of a fraction of the general population of users). I acknowledge that there are examples where CPU speed is king, but often, even these are limited by memory access and worse still disk access or even worse still network bandwidth... My point is that the legitimate examples of cpu-bound usage do not represent the mainstream usage of computers.

      In the mainstream, most users click a button or hit a key and trigger some cpu event that completes long before they even recognize that it's done. Meanwhile, the cpu blazes away... waiting for the next request for a burst of useful activity. Real performance benefits come not from making the bursts faster and certainly not from making the waits faster, but rather from reducing the cycle time between the bursts. In other words, most users benefit more from smarter user interfaces than faster cpus.

      Is there a market for faster cpus? Of course, just not the market that that is being pandered to by the standard benchmarks. If you have a cpu-bound application and your business depends on competitive performance, you're going to do your own benchmark and your performance assessment probably won't agree with everyone else's performance assessment.

    15. Re:What was MacWorld's flawed logic? by dan+the+person · · Score: 2, Informative

      The '2x' number Apple said was for the CPU

      Go to apple.com and there's a picture of an iMac, the tagline below is "2x faster. Twice as amazing."

      That clearly gives the impression the machine is 2x faster. The machine isn't going to be twice as amazing if only one small part of it is 2x faster.

      The tagline isn't "2x faster processor" ( of course the processor is 2x faster, there's two of them! )

      And the picture isn't of the CPU.

      here's a link to the pic incase the apple homepage changes
      http://images.apple.com/home/2006/images/intelimac 20060113.jpg/

    16. Re:What was MacWorld's flawed logic? by shotfeel · · Score: 1

      That helps if an application is mutltithreaded to begin with, but it doesn't help at all if the app was written as one single thread.

    17. Re:What was MacWorld's flawed logic? by Anonymous Coward · · Score: 0

      better yet - READ THE TEST RESULTS in the article.

      They clearly show native (unibin) apps running between 1.6x and 2.8x the speed of a G5 iMac.

      Why are people saying it's only 20% faster? It ISN'T. And as more native software appears, it will only go faster... and faster... and faster...

      read the facts, stop conjecturing! It actually IS 2 to 3 times faster.

      I hope this clears up the discussion. Read the macspeedwhatever article's benchmarks (non-rosetta) and learn.

      Cheers!

    18. Re:What was MacWorld's flawed logic? by edflyerssn007 · · Score: 1

      In my experience my athlon 64 3700+ laptop is more responsive in mac os x 10.4.3 than windows xp sp2, but then again mac os is newer code designed to take advantage of sse3 and other instruction enhancements like that. Yes..........I am running mac os x on a windows laptop, why? because i can. www.osx86project.org is where i learned how to do it.

      --
      So you see what had happened was....
  6. Splitting hairs by Belseth · · Score: 3, Insightful

    The machines themselves have to be faster. If the old chips were on par with similar PC chips the very fact they are dual core increases the speed. The real problem is in applications. Even in the PC world most apps don't take advantage of the dual core architecture. Even Maya only uses multiple processors when rendering. If you have a quad machine, a dual/dual core, it will only use one processor for most functions but will use all four nodes in rendering. If I ran a benchmark that involved modelling it would show no improvement in speed over a single chip machine. If I ran a render test would clock in around 4X faster. Both tests are accurate and simply reflect how the software is designed not how the chips themselves function.

    1. Re:Splitting hairs by jschimpf · · Score: 1

      In OS X dual cores always help because you are running a lot of processes and they get spread over two cores not just one. (In the Activity monitor you can show up to 200% processor utilization with dual cores.)

    2. Re:Splitting hairs by shotfeel · · Score: 1

      From my experience, that only happens when you're running more than one app that's fairly processor intensive. More common is that one really hungry app maxes at 100% of one processor, and the rest of the stuff takes 20-50% of the other. Every little bit helps though.

    3. Re:Splitting hairs by 99BottlesOfBeerInMyF · · Score: 1

      If I ran a benchmark that involved modelling it would show no improvement in speed over a single chip machine. If I ran a render test would clock in around 4X faster. Both tests are accurate and simply reflect how the software is designed not how the chips themselves function.

      This, of course assumes that the OS uses no CPU time and you are running no other applications. I don't know about you, but I have nine applications running right now and a total of 63 processes. I don't know how many threads. About 10% of my CPU is going to background processes while everything but my browser is more or less idle. When I'm actually getting work done, it is not at all uncommon for me to have multiple CPU intensive processes occurring.

  7. WoW would be a terrible benchmark... by rexbinary · · Score: 2, Interesting

    ...as it's not a Universal Binary yet.

    1. Re:WoW would be a terrible benchmark... by Burning+Plastic · · Score: 1

      But it is a universal binary in the link from the OP - this was a comparision beween a G5 running the PPC version and an Intel iMac running Blizzard's intel build.

      It's not out yet, but it is running as a universal.

      --
      [All Your Fish Are Belong To Us]
    2. Re:WoW would be a terrible benchmark... by arloguthrie · · Score: 1
      --
      ----------
      Cheese it! It's the FEDS!
  8. MacSpeedZone? by Anonymous Coward · · Score: 0

    Yeah.... Like they are not biased or fudge things like the numbers....

    But I guess stuff from a site like WindowsXPSpeedZone would be fair, even in stuff like a Linux/BSD/etc comparison to XP...

  9. More comparisons.... by Anonymous Coward · · Score: 0

    Did anyone notice that the power cord on the new iMac is 30% longer? Guess size does matter...

  10. Slashdotted by olddotter · · Score: 1

    Links to the site or mirrors?

  11. that's all very nice.. by LittleGuernica · · Score: 0, Offtopic

    But does it run windows yet? i dont know what it takes to run XP or Vista on it, maybe a bit more cowbell, but i really feel that running a dual boor imac really ties the room together, like a nice rug.. i'm dissapointed in the geek community that no one has managed to run windows on it yet...come on! (arrested development style) maybe i should put out a bounty on the wholoe dual boot thing..o wait...

    1. Re:that's all very nice.. by tgibbs · · Score: 1

      It's early yet. Besides, I don't really want to run Windows on it--I want to run Windows applications on it, ideally in Mac-style windows that can interleave with OS X windows, and preferably with the menu bar at the top of the screen instead of at the top of the window.

      So I'm much more interested in Windows non-emulators like WINE.

    2. Re:that's all very nice.. by Anonymous Coward · · Score: 0

      I have found that MAC OSX will already runs on most any processor with SSE2 or SSE3, patches are needed. I have seen it run on a Dell P4 1.7ghz, I have been unable to get some of the PPC apps to work, but Im sure it wont be long. Now as to running windows on the Intel MAC, I believe apple said that people can try, but they wont support it. So i think its just a matter of time, im sure there are already geeks working on it round the clock.

    3. Re:that's all very nice.. by Anonymous Coward · · Score: 0

      LittleGuernica: Well -- sure, I could do that.

      Anonymous Coward: If you successfully do so, I will compensate you to the tune of 1% of the recovered sum.

      LittleGuernica: A hundred.

      Anonymous Coward: Thousand, yes, bones or clams or whatever you call them.

      LittleGuernica: Yeah, but what about--

      Anonymous Coward: --your rug, yes, well with that money you can buy any number of rugs that don't have sentimental value for me. And I am sorry about that crack on the jaw.

      LittleGuernica: Oh that's okay, I hardly even--

      Anonymous Coward: Here's the name and number of a doctor who will look at it for you. You will receive no bill. He's a good man, and thorough.

      LittleGuernica: That's really thoughtful but I--

      Anonymous Coward: Please see him, LittleGuernica. He's a good man, and thorough.

    4. Re:that's all very nice.. by LittleGuernica · · Score: 1

      yeah, and can I have my Autobahn record back?

    5. Re:that's all very nice.. by Anonymous Coward · · Score: 0

      maybe tomorrow. today I'm a nihilist.

  12. Regarding WOW... by Anonymous Coward · · Score: 0

    I just got the 20" Intel iMac last weekend. It's an upgrade from the last-generation Powerbooks. WOW is a significant increase in performance at the highest widescreen resolution.

    Although, this was only after I installed another 512MB ram, with the default 512 MB ram, the game was 10 FPS in major cities at the highest resolution.

  13. Velocity Engine by Anonymous Coward · · Score: 5, Funny

    AltiVec! Velocity Engine!
    I thought this was the best CPU technology?
    Steve Jobs told me I had a super computer when I bought
    my G3, G4 and G5.
    My PowerPC processors were unique. It made me special. Anyone
    can have an Intel processor. Even poor people. How is that exclusive?
    I'm an upper middle class elitist snob. Why did Apple take away my bragging rights! Now I'm a technological nobody. I'm plain and boring again. For pete's sake, poor people can even buy IPODS now!!
    I want my super computer back! Because I lack a personality and I have no soul what product can help? Please Steve Jobs tell me what to buy to get my soul back. What can I buy so that I feel whole again?
    What about a Hybrid car, will that help me?

    1. Re:Velocity Engine by Anonymous Coward · · Score: 0

      Let us know when you lose your fear of other people's opinions, and maybe someone will care.

    2. Re:Velocity Engine by linguae · · Score: 1
      I want my super computer back!

      Relax. Calm down. Apple's entire G4 and G5 lineup is still intact, so you can still buy one and have all of that PowerPC and AltiVec goodness while it's still available.

      When that is over with, you can do what other x86 haters (like myself) would do if they won the lottery and treat yourself to a Sun notebook, or Sun Blade 2500, which I'm pretty sure will get your soul back. Unless you're not a x86 hater and just don't like poor people with Macs, that is....

    3. Re:Velocity Engine by jcr · · Score: 1, Informative

      I thought this was the best CPU technology?

      It was. Then, Intel caught up.

      -jcr

      --
      The only title of honor that a tyrant can grant is "Enemy of the State."
    4. Re:Velocity Engine by martinX · · Score: 1

      A Segway. That's what you need.

      --
      When they came for the communists, I said "He's next door. Take him away. Goddam commies."
    5. Re:Velocity Engine by Anonymous Coward · · Score: 0

      You gotta buy a Volkswagen "New Beetle". Also a pair of black slacks and a black turtleneck. Oh, and change your name to "Dieter".

    6. Re:Velocity Engine by Tim+Doran · · Score: 1

      What about a Hybrid car, will that help me?

      Definitely. I just got my new Hyundai hybrid and I feel like the cat's ass... though my neighbour with the Prius seems unhappy with me for some reason.

    7. Re:Velocity Engine by SteeldrivingJon · · Score: 3, Funny

      What can I buy so that I feel whole again?

      Neuticles.

      --
      September 2011: Looking for Cocoa/iOS work in Boston area Cocoa Programmer Quincy, MA
    8. Re:Velocity Engine by myz24 · · Score: 1

      Everyone compares a dell laptop to an apple laptop for pricing...sun is just rediculous!

    9. Re:Velocity Engine by markiv34 · · Score: 0

      To get your soul back you need to buy a Dell or a Gateway machine this would be my (or even Steve Jobs) suggestion. Buying a hybrid car is not going to save your soul, you need to get yourself a gasaholic vehicle like a hummer or any big ass SUV that would do the job.

      --
      No Black or White only shades of Gray
    10. Re:Velocity Engine by aliquis · · Score: 1

      "Now I'm a technological nobody."

      Don't worry, mac users has always been.

  14. If it's so fast... by JDooty1234 · · Score: 2, Funny

    Maybe they should have run that article off of the new iMac before Slashdot got ahold of it.

  15. Who to believe? by QuietLagoon · · Score: 4, Insightful
    Apple says their systems are fast...

    Microsoft says their software is secure...

    Oracle says their database is hack-proof...

    Symantec says their software protects me from hackers...

    1. Re:Who to believe? by 10101001+10101001 · · Score: 1

      Is this one of those four path ways and which one you go to (cause the other three don't exist)? I'd have to say that "secure software", "hack-proof database", and "software protects from hackers" are all pretty mythical--well, unless you throw all of those in cement, and even then it's really a matter of just how much time they're willing to throw into cutting away at it. But, a system can be fast, even if it's subjective. The other three really aren't subjective (and aren't even really relative, as written, though throw in the implied security guards to have that). So, which road do you take?

      --
      Eurohacker European paranoia, gun rights, and h
    2. Re:Who to believe? by Anonymous Coward · · Score: 0

      Linus says his Kernel is Free....

      Oh wait, it is...

    3. Re:Who to believe? by Ziviyr · · Score: 1

      And Linux has a penguin that just sits there looking happy with a gut full of fish.

      --

      Someone set us up the bomb, so shine we are!
    4. Re:Who to believe? by WilliamSChips · · Score: 1

      Google says they're not evil(and they're not...yet...)

      --
      Please, for the good of Humanity, vote Obama.
    5. Re:Who to believe? by this+great+guy · · Score: 1

      I say Santa Claus does exist...

  16. what a joke by Anonymous Coward · · Score: 0

    this has to be big joke right? a Core Duo as fast as a Quad G5? gimme a break.

  17. TFA by Anonymous Coward · · Score: 1, Informative
    The site was slowing down when I hit it, so here's the text in all its glory:

    Mac Performance In The Raw - Wow! The Intel iMac Is Almost As Fast As The Quad Core Power Mac - How Macworld Pulled A "Not So Fast" One ...
    Wednesday, January 25, 2006

    We are pleased to report that our testing results show that the new Dual Core Intel iMac, which clocks in at 2X 2.0GHz is almost as fast as the current high-end Power Mac that has two Dual Core G5 processors running at 2.5GHz.

    How can this be, you ask ... An ostensibly 2 processor machine nearly keeping up with a faster, ostensibly 4 processor one? Easy, we used the same methodology employed in the Macworld "First Look" review of the new iMacs, and applied that to our comparison. (they found the Intel iMac, in general, only 10% to 25% faster than a similar speed single core processor G5 iMac)

    But before we go any further, lets look at the astounding numbers, that prove our case ... the incredible performance, of the Intel iMac ....

    We found the following

    When running a QuickTime encode the Power Mac Quad G5/2.5GHz took 84.85 seconds.
    The Intel iMac Core Duo 2.0GHz took 97.02 seconds
    Advantage: Power Mac by 14% .... Nothing to write home about ... Not even keeping up with the clock-speed difference between the two machines

    Not convinced .... I wasn't either ... Ok lets try something different. Lets run two encodes at the same time .... just for fun. It is easy to do, just duplicate the file and run the processes concurrently.

    What scores did we get?

    When running the QuickTime encodes the Power Mac Quad G5/2.5GHz took 86.25 seconds.
    The Intel iMac Core Duo 2.0GHz took 176.60 seconds
    Advantage: Power Mac by 105%

    Ok let's get this straight when doing twice the work it only takes the Power Mac with its four processor cores, about 2 extra seconds, but takes the Intel iMac an extra whopping 79+ seconds - almost twice as long as in the single test?

    What's wrong with this picture? What's wrong is processor capacity vs processor usage.

    If you visit your Utilities folder, in the Application folder on your Mac (assuming you are running OSX), you will find a small application called "Activity Monitor". From the Window menu of Activity Monitor you can launch a window call CPU usage.

    This will give you visual feedback about how much, of the processing capacity of your machine, is being utilized at any given time. When we speed trial any machine, we have the CPU usage window open while we go about our testing, making note during each test of how much of the processor(s) are put to use.

    Guess what we found for the two tests outlined above?

    In the first test, where there was just one file being encoded, the Intel iMac, on average, was using 87% of its processing capacity ... 13% was sitting around with nothing to do

    On the other hand the Quad G5 Power Mac was using less than half its capacity, 42%. A full 58% was waiting for its dance card to be filled.

    When we ran the two QuickTime encodes at the same time, processor usage moved to 87% for the Power Mac, and 100% for the Intel iMac. In other words the iMac was maxed out, and the Power Mac had 13% capacity left before it would really start to sweat.

    This is where the Macworld "First Lab Tests" article falls a little flat ... obscuring the processor capacity vs processor usage problem inherent with mutiprocessor machines (or multi-core ... same difference). Using Macworld's logic we could argue, given the data above, the Quad G5 Power Mac is only 14% faster when running some of Apple's own applications. We think that this is misleading, as we pointed out.

    There are precious few applications that take complete advantage of multiple processors, and of those only certain action

  18. WoW by Eightyford · · Score: 1

    I see only one way to solve this: Give me one. I'll run WoW on it, and decide.

    I know that was obiously a joke, but I'd just like to point out that a good video card and internet connection are much more important than processor speed these days.

  19. How fast does it feel? by tgibbs · · Score: 2, Insightful

    For most purposes, the key question for most users is not going to be how fast it is really, but how fast it "feels," in practice, say watching a QT movie with maybe a browser loading a couple of windows in the background and a Spotlight search in progress.

    The OS X seems to be pretty good at spreading the load of multiple programs and the OS across processors. I remember that the dual 450 MHz Macs seemed dramatically snappier that the 800 MHz iBook, even though in most tests the iBook would come out ahead.

    1. Re:How fast does it feel? by rjstanford · · Score: 1

      Most operating systems are pretty good at this these days. Many moons ago when the ~600mhz PIII was top of the line, I found a good deal on some HP Kayaks with dual 300mhz PIIIs instead. They performed amazingly well when doing normal interactive tasks, and had close to the same performance for any batch processing that was parallelized.

      --
      You're special forces then? That's great! I just love your olympics!
  20. Performance is irrelevant here by frostilicus2 · · Score: 2, Insightful

    I doubt that Apple's move to Intel had a great deal to do with performance, and I dislike this fact being used as a key selling point for the iMac. If you refer to the "definitive" G5 vs. everyone else benchmarks at http://www.anandtech.com/mac/showdoc.aspx?i=2436 it is apparent that the G5 is largely comparable to offerings from AMD and Intel (admitedly the new Intel Core Duo is not benchmarked) and although the G5 is, in many cases, not the fastest chip, it is similar. The increases of 2-3x in performance between the G5 and MacIntel iMac are a consequence of having a dual core chip (and being a generation ahead of the G5) besides, Apple could have feasibly used the dual-core G5 chips that they've had at their disposal for a while now. Any Mac zealot will argue that their PowerPC Mac is "just" as fast as an intel based system, but performance is NOT the issue. This is why the iMac was updated first, it is a consumer product, supporting Apple's fledgling attempts to enter the living room (consider front row ) - it desperately needs Intel's brand name associated with its hardware.

    The significance of this new product is long term and cannot be underestimated.

    Apple finanlly has penetrated the consumer electronics market with the iPod, and their brand recognition and image could not be better. Apple has shoehorned its way into the psyche of the common man. It now has to bring its key product, the mac, to the masses. Consumers will be attracted from a design perspective and because it shares the same logo as their iPod, the OS is a little different to windows, but now at least you have the reasurrance of dual booting into windows (I'd like proof of this concept, but I'm sure it will come) and the processor gives the security of a well recognised brand name (consider brand strengh of Intel vs. AMD).

    In the future, I doubt that IBM's die shrunk Power chips will share the low power consumption that I expect Intel will bring, and many concepts for great products will never be realised. I'll be interested to see if the new Intel chips can match up to the PowerPC altivec-ised vDSP FFT's , but in a way I don't care. It is an exciting time to be a Mac user, as more people join the fantastic experience that we have had for so long, and new software and hardware comes our way. Either way, they're finally here and it will be interesting to see what the future holds.

    --
    Nothing sucks like a Vax, nothing blows like a PowerMac G4
    1. Re:Performance is irrelevant here by Siguy · · Score: 1

      I disagree. Three years ago I owned a Dell Laptop with a Pentium M processor. Last year I bought a PowerBook G4. The two chips had the same processor speed (1.67 vs 1.7). The PowerBook is significantly slower than the Dell laptop was. Noticeably slower. Now I like Mac OS X a lot, and it's hardly a terrible or slow computer, but I certainly do miss the sheer speed and efficiency of the other chip. I know that you're talking about the G5 chip and not the G4 mobile chip, but come on, a big reason they made the change was that the G5 was too hot and too big to be used in a mobile or sleek form factor. I've used Macs and I've used PCs and very simple processor intensive tasks have always gone faster for me on the PC. I'm looking forward to the new Intel Macs to finally level the playing field so I can have my speed and my OS X too.

    2. Re:Performance is irrelevant here by Moofie · · Score: 1

      Your parent poster was talking about a G5. You bought a G4. What do you disagree about, exactly?

      --
      Why yes, I AM a rocket scientist!
  21. Nah. I call double bullshit by nagora · · Score: 0, Offtopic
    Look at the tasks that MacWorld tested. They're all real things that real people do all the time. Sure, I could write a Towers of Hanoi program in assembler (I have one here I wrote in Forth, if that's any help) which would "max out" the processor useage and run lots faster on the new machines. But who cares?

    In the real world computing tasks are dependant on the system, not just the CPU, and a computer that is 9% SLOWER at exporting an image while resizing is NOT going to deliver Job's promise.

    Spare CPU capacity is neither here nor there; the user's experience is the time from clicking "go" or whatever to seeing the little timer/bouncing ball turn back to a regular arrow. Because users can't task-switch every 300ns; they click and wait most of the time.

    So, MacSpeed's figures are probably correct but totally academic for most users, and MacWorld's figures are probably well short of the machine's capacity but a much better indication of the user's experience.

    TWW

    --
    "Encyclopedia" is to "Wikipedia" what "Library" is to "Some people at a bus stop"
  22. The only reason this is interesting by BearRanger · · Score: 1

    The only reason this is interesting is because Apple is the only vendor with a shipping CoreDuo system. We know the new systems are faster than the old ones. Quantifying how much faster is a nice exercise, but not really relevant. Is anyone *seriously* considering buying a PPC iMac at this point?

    Now, when Windows hardware vendors ship CoreDuo products next month will we have the same uproar? I doubt it. I'm sure someone will benchmark application performance. But no one will care, because they'll be SECOND to market.

  23. If the benchmarks are true... by Anonymous Coward · · Score: 0

    then the new Intel iMacs are fast, and the PPC G5s are half-fast.

  24. I have both G5 2Ghz and Core Duo 2Ghz iMacs by GreatDrok · · Score: 4, Insightful

    OK, lots of talk about these but here it is from someone with both G5 and Intel iMac 20" machines. For some things the Intel is faster than the G5 by a significant margin (Safari in particular feels quite snappy) but when you have to run PPC apps the G5 is much better. For the moment there are really quite a lot of apps that are not Intel native so the overall impression when using the two machines is that the Intel is no quicker, and some times much much slower. For PPC apps the Intel machine is no better than my 933Mhz iBook G4. Worse, there is significant pain at the moment in doing much that is taken for granted with the G5 iMac. Many programs do not run (we use BlueJ and Eclipse, neither work on the Intel). You still get the spinning beachball of death, and it seems quite often too. All in all, it feels just like any other previous Mac.

    One thing that impressed me was the fact that Rosetta is able to run command line apps compiled for PPC. Gives a good idea of just how fast Rosetta is when running raw PPC code without a GUI. The answer is that a 2Ghz Intel chip running PPC code is about the same speed as a 500Mhz PPC. very reasonable compared with something like PearPC but still a significant drain. You get some back with the GUI as much of that code is native so something like MS Office actually feels usable. Our 2.3Ghz G5 Xserves smoke both the G5 iMac and the Intel even when the Intel is running native code at least with our apps.

    So, do I recommend the Intel iMac? Probably. Would I recommend against a G5? Nope. Buy whichever you like. With the G5, you know what you are getting and it will still run software for the forseeable future. The Intel machine is pretty hard work at the moment but has the promise of getting better as more universal apps come along. Of course, there is currently no viable fast PC emulator so you can't run Windows or Linux on it. With Qemu or VPC on the G5 you can run Windows quite reasonably but not as quickly as you will be able to in say, six months when MS get off their arses and build VPC for the Intel Mac.

    I can see why Apple released the iMac first, makes sense. The G5 iMac was never really a speed demon so the Intel one doesn't suffer too much overall. Same goes for the MacBook Pro which should be able to keep up with the G4 PowerBooks. It will take a while yet before slotting an Intel chip into the pro towers makes sense though.

    A Mac is a Mac though, doesn't really matter what is inside chip wise.

    --
    "I have the attention span of a strobe lit goldfish, please get to the point quickly!"
    1. Re:I have both G5 2Ghz and Core Duo 2Ghz iMacs by SpinJaunt · · Score: 1

      You should work for Apple and sell Apple gear, Steve Jobs could make you Employee of the month, every month :)

      --
      /. is good for you.
    2. Re:I have both G5 2Ghz and Core Duo 2Ghz iMacs by greg1104 · · Score: 1

      Many programs do not run (we use BlueJ and Eclipse, neither work on the Intel).

      What an amazing surprise, since Eclipse has always worked perfectly on under Mac OS X before.

      As someone who spends a lot of time in Eclipse, the fact that it's never quite worked right under OS X is the only reason I'm still typing this on a PC running Windows. While it's unfortunate for early adopters like yourself, I'm kind of glad it's altogether broken because perhaps this will force Apple to pay more attention to the issues that have been there all along.

  25. Getting some new Macs... by Anonymous Coward · · Score: 0

    We have been fortunate enough at home to come into some extra money and are getting ready to upgrade to the new iMac 20" core duo model. Can't wait. :-) Sure hope it will give great results with Second Life.

    I always wanted the G5 20" iMac but the way the $ worked out we can now get either, or. We're going with the new one. I frankly don't care about all these damn benchmarks because when it comes down to it - they're faster and they're the newest thing in Apple's orchard. We'll go with fresh fruit right off the factory tree and hope for the best.

    ML

    1. Re:Getting some new Macs... by Anonymous Coward · · Score: 0

      actually second life runs really badly under rosetta, but Linden Labs is supposed to have a beta test version of a native intel mac version out in the next few weeks.

  26. WoW on intel iMac by qyiet · · Score: 2, Informative

    Give me one. I'll run WoW on it, and decide.

    One of my guildmates just got her one up and going last night, Running WoW under rosetta. It wasn't actually a comprehensive test, but here comment was "Wow I'm in orgrimar and not lagging". So I'm guessing at default settings it's OK.

    Performance should improve when bliz relases 1.9.3 and she dosn't have to use rosetta anymore.

    -Qyiet

    1. Re:WoW on intel iMac by Anonymous Coward · · Score: 0

      From a dual 533 owner in Ogrimmar... /cry

    2. Re:WoW on intel iMac by Kildjean · · Score: 1

      That is inconsistent. Running Wow under Rosetta is not going to make it look like there is no lag in ogrimmar. What time did she connected, how busy was ogrimmar... heck I get no lag in ogrimmar at 6am on a pacific server... So just saying that running wow under rosetta and there is not lag is sheer stupidity. Because wow is going to run with less performance under rosetta than it will natively.

      --
      Nom de dieu de putain de bordel de merde de saloperie de connard d encule de ta mere.
  27. Biased even for slashdot. by Jason1729 · · Score: 0, Flamebait

    Looks like MacWorld magazine was a little premature in reporting that the new Apple iMac Core Duo doesn't live up to Apple's speed claims. The folks over at MacSpeedZone have done some performance testing of their own that debunks MacWorld's results and shows that the new iMac Core Duo DOES live up to the hype.

    There's 2 conflicting reports, so automatically the one that makes the new macs sound bad is a premature that needs to be debunked, and the one that makes the new macs sound good is right and does that debunking.

    1. Re:Biased even for slashdot. by 99BottlesOfBeerInMyF · · Score: 1

      There's 2 conflicting reports, so automatically the one that makes the new macs sound bad is a premature that needs to be debunked, and the one that makes the new macs sound good is right and does that debunking.

      Gee don't bother to RTFA or anything. It specifically addresses the previous report's results and why they are not a good sampling (mostly disk bound not processor). The summary does not even say the old report is wrong is says it may have been premature. From now on please at least read the article before making derogatory remarks about the summary.

    2. Re:Biased even for slashdot. by Overly+Critical+Guy · · Score: 1

      Oh, whatever. This article has a question mark at the end of the headline, leaving the conclusion to the reader. The article simply points out the flaw in MacWorld's benchmarks (not taking into account processor usage).

      1.) MacWorld puts out benchmarks
      2.) Someone points out the benchmarks are flawed
      3.) Where's the bias?

      The last Slashdot article screamed with a headline about "not living up to the hype" regarding Apple's benchmarks, and all the posters made Steve Jobs reality-distortion-field jokes, so it's a little silly to claim there's a bias in favor of Apple in this case.

      --
      "Sufferin' succotash."
    3. Re:Biased even for slashdot. by Anonymous Coward · · Score: 0
      "Gee don't bother to RTFA or anything."

      You're obviously new in town stranger, let me tell you how it is: only women & gays RTFA. Manly men, like you and me, shoot on reading the title.

  28. Do people really do this?? by AC-x · · Score: 2, Funny

    Yes, if you're upgrading to an Intel-based iMac from an iMac G5 you bought just a few months ago, all of your non-Universal software will run at half speed.

    I know apple users have a reputation for following fads, but I hope people don't rush out and by a new iMac every time they do a CPU upgrade (not even a new form factor!), please tell me they don't!!

    :) [pat. pending]

  29. Re:WoW by Anonymous Coward · · Score: 0

    I'd just like to point out that a good video card and internet connection are much more important than processor speed these days. You, uh, download a lot of porn, I take it?

  30. Re:WoW by Senzei · · Score: 1
    I'd just like to point out that a good video card and internet connection are much more important than processor speed these days. You, uh, download a lot of porn, I take it?
    Amazing how being a gamer sets you up well to do more than one thing. Somehow I doubt this line of reasoning will convince my girlfriend on the virtues of a new rig.
    --
    Slashdot: Where anecdotes and generalizations can be freely substituted for facts, logic, or intelligence
  31. Dupe: PowerPC benchmark flawed, Intel faster by AHumbleOpinion · · Score: 1

    Same story, year after year after year: PowerPC benchmark flawed, Intel really faster(*). Oh, wait, I see the difference, Apple is on the Intel side this time around. ;-)

    (*) Yes, I know that for PowerPC and Intel of the *same clockrate* PowerPC is generally 25-30% faster, the problem is PowerPC's perpetual lower clockrates. Brute force may not be elegant but it can prevail.

    1. Re:Dupe: PowerPC benchmark flawed, Intel faster by gforceamg · · Score: 1

      I believe the saying is "what the 80x86 lacks in style is made up in quantity making it beautiful from the right perspective".

    2. Re:Dupe: PowerPC benchmark flawed, Intel faster by raodin · · Score: 1

      That depends entirely on what Intel processor you're talking about, and what PPC you're talking about. Just about *anything* was faster than a P4 clock for clock, but P4s aren't what are being discussed.

    3. Re:Dupe: PowerPC benchmark flawed, Intel faster by Ninja+Programmer · · Score: 1
      (*) Yes, I know that for PowerPC and Intel of the *same clockrate* PowerPC is generally 25-30% faster, the problem is PowerPC's perpetual lower clockrates.
      This is actually *NOT TRUE*, and your repetition of it is testimony to the effectiveness of Jobs' reality distortion field. Especially the latest generation of PowerPCs -- Athlon/Opteron and now the new Pentium-M based CPUs all have tremendously highly *PER CLOCK* performance (this due in large part to IBM's decision to go with 2-cycle latency integer instructions). So the total gap in performance is *MUCH* higher than people's perceptions about it.

    4. Re:Dupe: PowerPC benchmark flawed, Intel faster by be-fan · · Score: 1

      I wouldn't call the difference *tremendous*. On integer code, the Athlon 64 (running 64-bit code) is maybe 30% faster. Running 32-bit code, the difference is probably more like 20%, per clock. On floating-point code, the difference is maybe 10-15%, depending on how well-optimized the code is. Significant, yes, tremendous, no.

      --
      A deep unwavering belief is a sure sign you're missing something...
    5. Re:Dupe: PowerPC benchmark flawed, Intel faster by AHumbleOpinion · · Score: 1

      This is actually *NOT TRUE*, and your repetition of it is testimony to the effectiveness of Jobs' reality distortion field.

      Or perhaps you are having trouble with the word "generally" and didn't catch the clue that "Same story, year after year after year" indicates I am not discussing only the latest and greatest CPUs. I'm actually going back all the way to 603/604 days. Anyway, thanks for the laugh. I'm usually getting flamed by the RDF'd Mac advocates for spreading the heresy that PowerMac are only marginally faster than PC under somewhat contrived scenarios, it's quite amusing to now be labeled an RDF'd Mac advocate for having the exact same position.

      I have an P4 3.2, a P-M 1.6, and an Athlon 3200+. I am quite familiar with how PC's generally stack up to recent Macs.

    6. Re:Dupe: PowerPC benchmark flawed, Intel faster by Ninja+Programmer · · Score: 1
      Or perhaps you are having trouble with the word "generally" and didn't catch the clue that "Same story, year after year after year" indicates I am not discussing only the latest and greatest CPUs. I'm actually going back all the way to 603/604 days.
      Its been true since the Athlon/Pentium III days. Before that there were no benchmarks on the Power PC at all (you're not going to bring up ByteMark are you?), and thus you have no basis at all to make such a claim.
    7. Re:Dupe: PowerPC benchmark flawed, Intel faster by AHumbleOpinion · · Score: 1

      ts been true since the Athlon/Pentium III days. Before that there were no benchmarks on the Power PC at all (you're not going to bring up ByteMark are you?), and thus you have no basis at all to make such a claim.

      I did try ByteMark when Apple used it as a basis for it's claims, as I did with their other basis during other advertising campaigns over the years. When x86 ByteMark was compiled with a current compiler with appropriate settings the PowerPC improvements were far less dramatic than when Apple used an old 486 optimized version on a Pentium against a current PowerPC build. Similar story when Apple used old MMX code on an Intel CPU with SSE against a current PowerPC build using Altivec. Similar story when Apple used an inferior compiler for Intel spec scores, rather than official spec scores. In addition to these synthetic benchmarks, I develop for both PC and Mac. Historically Apple's claims over the years have been marketing exaggerations, PowerPC turned out to only be slightly faster in technical comparisons but an overall loser in general real world comparisons. You are mistaken regarding P3s and early Athlons. Are you playing games on the Athlon side where you use the actual clockrate rather than what AMD claims is the equivalent and uses on their product packaging and literature? Also, cherry picking the more recent models and fixating on these does not change the validity of nearly ten years of history.

    8. Re:Dupe: PowerPC benchmark flawed, Intel faster by AHumbleOpinion · · Score: 1

      It's generally been true for Intel vs. PPC comparisons for nearly ten years. And yes I am also discussing the P4, it appeared in many of Job's stage demonstrations, and historically it generally beat it's contemporary PPCs when the artificial technical constraint of matching clockrates was lifeted.

    9. Re:Dupe: PowerPC benchmark flawed, Intel faster by Ninja+Programmer · · Score: 1

      I did try ByteMark when Apple used it as a basis for it's claims, as I did with their other basis during other advertising campaigns over the years. When x86 ByteMark was compiled with a current compiler with appropriate settings the PowerPC improvements were far less dramatic than when Apple used an old 486 optimized version on a Pentium against a current PowerPC build.

      And did you try ByteMark with a compiler built specifically for winning that benchmark on the x86? (Like the Intel Compiler?) Remember Apple quoted it, after taking whatever measures they wanted to to make sure they looked good on it. Intel responded many years later (they did not have a compiler shipping at the time Apple first used ByteMark publically), but only after Apple stopped using it as a benchmark. lmbench, which is a subset of the ByteMark benchmark for Linux systems, has been running for some time and show that x86 processors have been ahead of Mac processors from at least the time of the Athlon.

      ... Similar story when Apple used an inferior compiler for Intel spec scores, rather than official spec scores. ...

      Which Spec scores? The recent stuff is fully debunked here: http://www.pobox.com/~qed/apple.html (scroll down a bit). Do you mean the old Spec 92 scores? If so, I just took the numbers from the Spec themselves -- Intel was mostly ahead of them (Motorola may have taken advantage of the lag in product launches between the Pentium and Pentium Pro to temporarily come out ahead).

      Historically Apple's claims over the years have been marketing exaggerations, PowerPC turned out to only be slightly faster in technical comparisons but an overall loser in general real world comparisons.

      There has never been any reputable numbers to back such a claim up. You have to go back to really old stuff before that is even possible.

      You are mistaken regarding P3s and early Athlons. Are you playing games on the Athlon side where you use the actual clockrate rather than what AMD claims is the equivalent and uses on their product packaging and literature?

      Its not likely that I would make that kind of mistake -- I used to work for an x86 vendor, and was following that stuff very closely at the time. The leading architecture of the PPC at the time was from Motorola, and the maximum potential of what the processor documentation said was lower than what the x86's of that same era actually delivered. The PowerPC G3 was basically comparable to the AMD K6 processor on a per-clock basis.

      The G3 had fewer rename registers, the multistep single addressing modes common to most RISC processors, a non-fully pipelined floating point unit, two integer adder-ALUs, and very shallow speculation and reordering capabilities. The K6 had better reordering capabilities, but a slower instruction decoder. With the G4 the clock rate improved, and there was a slight increase in rename registers and reorder buffers, but the Athlon, P-III, and P4 all shipped during this period all of which had vastly superior microarchitectures (remember that these chips also all had hefty on-chip L2 caches).

      The Motorola G4+ basically deepened the pipeline and increased the clock rate, but did something which dramatically lowered the IPC. I never bothered to figure out what that was since it was slower on clock rate anyways, and was clearly losing benchmarks even to the older G4.

      It was not until the IBM 970 that the PPC was on a more even footing with x86s from an architectural point of view (deep pipelining, large reorder buffers, many rename registers, pipelined floating point, etc) -- except that they totally sacrificed integer performance. With a latency of 2 clocks per integer instruction, it meant that any code that has high integer utilization runs slower (some figures here:

  32. Consumers care about intel!? by grahamsz · · Score: 1

    Most of the less-technical people i know can tell you if they have a dell, compaq or mac... but i'd be surprised if many know if they run Intel or AMD and the significance of that.

    The Apple and brand is far better known amongst non-techy users...

    http://www.brandchannel.com/start1.asp?fa_id=298

    I'd bet that intel needs Apple.

    Apple are in a good position because they can demand a premium for their products. By switching to the x86 platform they are unlikely to be in a position where they cant offer a premium product because their architecture doesn't support it.

    From a migration standpoint, hopefully there will soon be Windows emulators that take advantage of the virtualization on the CPU. A lot more users will be enticed onto the mac if it's straightforward to run the software they need.

  33. Can't you just say by shimmerkid · · Score: 1

    "it feels snappier," and leave it at that? That's all it usually takes to get Apple users to upgrade.

  34. Enough Benchmarks Already by Enrique1218 · · Score: 1

    Here is a quick summary of the benchmark articles (10 or so) I read this week.

    - PowerPC Application that are not universal binaries will run faster on a G5 than CoreDuo. Well DUH, they have to be translated through Rosetta first!!

    - Universal Apllication show slighly better performance for single thread apps and higher performance for multithreaded applications on CoreDuo. Again duh, I would expect a dual core system to outperform a single core system.

    - Macs still suck at games but in all fairness, they were running them in Rosetta.

    - There is only a handful of universal application and in all likelihood, they came with your computer

    No more articles till are more universal applications out. No more articles where the author counts the number of icon bounces. No more article where the author times the boot up. I am pretty sure we have figure whether or not to buy a new Intel Mac at this point.

    --
    You don't have to be smart to use a Mac, you just have to be smart enough to buy one
  35. Just watch the damn video by Anonymous Coward · · Score: 2, Interesting

    You know, the one that shows an Intel iMac and a G5 iMac getting powered up simultaneously?

    The Intel iMac flat out smokes the G5 iMac. It's not even close.

    1. Re:Just watch the damn video by Squozen · · Score: 1

      There's something wrong with that iMac G5 - my guess is that it was switched off instead of shutting down cleanly and it's doing a filesystem check. My 1.5ghz PowerBook boots from cold in under 50 seconds and an iMac will crush it.

  36. See they were over priced the whole time. by james_r_boyer · · Score: 0

    So basically all of us that have been happily using intel and amd cpus for years were right the old macs were overpriced and over hyped machines.

  37. Now I'm really confused by pjhenley · · Score: 1

    Doesn't the quote below indicate that the processor capacity argument overwhelmingly favors the dual G5's? How is the intel iMac mopping up anything when faced with increased parallelism? If anything, shouldn't MacWorld's methodology benefit the new intel iMac's?

    Encoding one QuickTime movie:
    intel dual core iMac: 97.02 seconds (87% CPU)
    g5 quad core powermac: 84.85 seconds (42% CPU)
    advantage g5: 14% faster

    Encoding two QuickTime movies:
    intel dual core iMac: 176.60 seconds (100% CPU)
    g5 quad core powermac: 86.25 seconds (87% CPU)
    advantage g5: 105% faster

    1. Re:Now I'm really confused by rjstanford · · Score: 1

      Doesn't the quote below indicate that the processor capacity argument overwhelmingly favors the dual G5's?

      Well, yes, the quad-core top-of-the-line 2.5ghz G5 is faster than the dual-core consumer-grade 2ghz iMac. This should be expected.

      How is the intel iMac mopping up anything when faced with increased parallelism? If anything, shouldn't MacWorld's methodology benefit the new intel iMac's?

      Easy - compare it to something other than the quad-core G5. In this example, they're comparing the dual-core intel against the single G5, and a lot of the tests - as implied by MacSpeedZone - probably aren't stressing the CPU enough. If they were to do the same double-encoding test on both systems, it would be interesting to see the results. That's where you'd expect the dual-core intel to start picking up steam.

      --
      You're special forces then? That's great! I just love your olympics!
  38. Re:WoW by Alcimedes · · Score: 1

    Actually, you're wrong. The limiting factor on Macs isn't the GPU performance, it's the CPU. Whether that's a difference in DirectX vs. OpenGL or just the way the chips are designed/programs written I don't know. However, on a Mac the limiting factor is the CPU.

  39. May be a *NIX thing by ishmaelflood · · Score: 1

    OK I'm running the world's worst OS at work - HP UNIX

    We recently got twin cpu boxes as an'upgrade' and have been living with disappointment ever since.

    In the many hours that I have spent watching the xload graph and top it is apparent that my main application process is single threaded. HP UNIX seems to be able to be able to correctly run all the other stuff (X and so on) on the other cpu. However, the speed penalty when I try and run two of main apps at once is ridiculous.

    OK, I'm out of my depth here...

  40. Debian? by Schraegstrichpunkt · · Score: 1

    Blarg. In my RSS viewer, all I saw was "MacWorld's iMac Core Duo Benchmarks Deb...", and I thought the last word was "Debian". I'm so disappointed.

  41. Vendication you iTard Mac idiots! by Anonymous Coward · · Score: 0

    Holy hell, I have been saying that that PPC Macs were overpriced and slow for years. I would always get modded away. Morons. This is just yet another proof that everyone should listen to me. I am generally correct you zealot dumbasses!

    I am the smrtest! -- Homer

  42. reposted comments by Anonymous Coward · · Score: 0

    Wow, I ripped and posted several +5 comments from the last weeks two iMac benchmark stories and they got modded up again! I actually used my account and got my 0 status raised back up to my +2 bonus again! Nothing beats the dumbass Apple fanboi moderators.

  43. My hesitation is how well by Anonymous Coward · · Score: 0

    will the PPC games running under Rosetta, such as the Sims 2, WoW, Myst IV etc performed on the new intel iMac?

  44. What Apple's claims really mean... by Rui+del-Negro · · Score: 1

    The new Macs are basically PCs running OSX, right? So when Apple says the new Macs are twice as fast as the old Macs, what they are really saying is the old Macs ran at half the speed of a PC. While that fact isn't exactly "news" to anyone living outside the iMarketing reality distortion field, it is "news" that Apple is admitting it.

    Or, considering Apple used to claim old Macs were twice as fast as Intel PCs, if the new (Intel-based) Macs are twice as fast as those, this means Intel CPUs are four times as fast as themselves.

    When you consider that AMD CPUs are even faster than that, I'm pretty sure this is the end of the space-time continuum as we know it.

    1. Re:What Apple's claims really mean... by Farmer+Tim · · Score: 1

      ...what they are really saying is the old Macs ran at half the speed of a PC.

      No, what they are really saying is the old Macs ran at half the speed of a PC with a dual core processor. But let's not get little details get in the way of a good self-congratulatory rant...

      --
      Blank until /. makes another boneheaded UI decision.
    2. Re:What Apple's claims really mean... by be-fan · · Score: 1

      The new Macs are twice as fast as the old Macs because they have a dual-core processor. Yes, the current line of x86 CPUs is faster than the G5, but its not an enormous difference. I've got a dual core Athlon X2 and a dual core G5 (2.2 Ghz and 2.3 GHz, respectively), and the X2 is maybe 20% faster (less for floating-point, a bit more for integer).

      --
      A deep unwavering belief is a sure sign you're missing something...
    3. Re:What Apple's claims really mean... by Anonymous Coward · · Score: 0

      That's not what Apple used to say, though. They've been claiming that Macs are faster than PCs since the dawn of times. And that stopped being true somewhere around 1992, and has been getting falser every day. The dual G5 gets absolutely trounced by a dual Xeon or Opteron of the same price at any real world task. Of course, since most CPUs sit idle for 90% of the time anyway, that's no big deal except for heavy-duty computing, but it doesn't make Apple's marketing department any more honest.

      And anyway, dual-core does not mean twice as fast. It means that it can do two separate tasks at (almost) the same speed as a single-core system can do one.

      But don't let details such as "reality" or "facts" get in the way of Apple's marketing (they sure never do).

    4. Re:What Apple's claims really mean... by Farmer+Tim · · Score: 1

      And that stopped being true somewhere around 1992

      Oh, really? I still own a 1997 PowerMac 6500, which was the first commercial desktop (Sparcs excluded) to hit 300MHz. http://www.mac-pro.com/s.nl/sc.2/category.64/it.A/ id.106/.f. My PC-owning friends were constantly amazed that Windows95 (Virtual PC) ran as fast as on their Intels, and I was still using that machine for professional CD mastering up until 2001 (were you mastering commercial CDs in 1997?).

      That machine replaced a 1995 LC630 DOS compatible, which had both a 68040/33MHz and a 486DX2/66MHz processor (each with independant RAM), and guess what? The 68040 benchmarked faster that the 486, despite running at half the clock speed and lacking a co-processor (by a margin of around 8% across the range of processor-based tests; I won't bother mentioning disk or video performance, since these were shared). It felt faster, too, even with the steaming pile that was Macintosh System 7.5.

      The dual G5 gets absolutely trounced by a dual Xeon or Opteron of the same price at any real world task.

      These days I do compositing work using Shake and CGI with Cinema4D, and render using a cluster; is that heavy duty enough for you? "Absolutely trounced"? Hardly. My experience is "marginally slower, but with a much lower level of maintenance" (a machine/cluster that isn't working is not faster at all, regardless of price). Besides, I'm unaware of any commercially available and supported Xeon or Opteron desktops that are in the same price range as as the G5 iMac (and don't talk about white boxes if you aren't prepared to add the cost of time to build and maintenence); links?

      And anyway, dual-core does not mean twice as fast. It means that it can do two separate tasks at (almost) the same speed as a single-core system can do one.

      Thank you; that hair was in desperate need of splitting. Since the vast majority of applications are multi-threaded nowdays, which processor performs any given task is largely irrelevant, so to the user the distinction hardly matters. All that matters is whether there is an overall performance improvement; twice as fast is hyperbole to those obsessed with numbers, but close enough for the average boob (just try explaining the difference to someone who doesn't care without eliciting a huge yawn; boring people shitless with minute details is the opposite of marketing, in case you hadn't noticed).

      But don't let details such as "reality" or "facts" get in the way of Apple's marketing

      You mean unlike the old Wintel marketing line that the Pentium III makes "surfing the net faster"? I'll be blunt: anyone who buys based solely on marketing hype, rather than looking at the trade-off between benchmarked speeds, real use speeds, reliability, price, and suitability for a given use is an idiot, regardless of which platform they choose.

      But my point still stands: a dual core x86 that runs significantly faster (if not exactly twice as fast, happy now?) than a single core PPC is not an indication that the x86 architecture is inherently superior.

      --
      Blank until /. makes another boneheaded UI decision.
    5. Re:What Apple's claims really mean... by Anonymous Coward · · Score: 0

      1. Funny you should talk about mastering CDs. That was exactly my job between 1989 and 1996. And I did switch from Macs to PCs in 1992 (maybe early 1993). But no, I wasn't doing it in 1997.

      2. You use a cluster of G5s? If so, you're a complete loony. By the way, when used for rendering, it's called a "render farm", but I'm sure you know that. HP and Boxx (and IBM, and a few others) sell workstations about 70% faster than a G5 (After Effects / Lightwave benchmarks) for the same price. Lots of companies (ex., MotionMedia) will sell identical systems (fully supported) for 30% less.

      3. The vast majority of applications is not multithreaded, and of those that are, the vast majority does not scale linearly. In video editing, a second core will typically increase performance by 60%, and subsequent cores add even less.

      4. That was an Intel (not "Wintel") campaign, and it was for the Pentium 4, not III. And no one really bought it. But at least they had a leg to stand on (SSE2 did enable more complex video codecs, meaning smaller video files, meaning faster downloads, or better streaming). The same cannot be said about Apple's claims of "fastest personal computer in the world" or "first 64-bit desktop", about the G5 (which would probably have to go to the Opteron and Alpha, respectively).

      5. no, in fact the PPC architecture is superior. But x86 CPUS are still (and have been for a long time) faster than the PPCs Apple has been using. And, upon abandoning PPC for x86, Apple chose the cheapest CPUs (Intel), not the fastest ones (AMD).

  45. well duhhh by 1336.5 · · Score: 0

    Our 2.3Ghz G5 Xserves smoke both the G5 iMac and the Intel even when the Intel is running native code at least with our apps.

    Umm yeaaaaa, the xServe is a fiber channel server... think about it.

    Props on the post though, truley informative!

  46. Mark parent as troll (was: Re:Velocity Engine) by Ninja+Programmer · · Score: 1
    I thought this was the best CPU technology?

    It was. Then, Intel caught up.

    Caught up to what? SSE-1 + SSE-2, which are the comparable techonologies to Altivec, both shipped *BEFORE* Altivec. Furthermore, anyone who has watched the x86 world to any degree has seen Intel and AMD actually *SLOWING DOWN* lately. They pushed a little too hard on Moore's law during 2001 - 2003, and are having a hard time just keeping up with their own pace. If anything, they are joining the x86 arena during a period of relative lull.
    1. Re:Mark parent as troll (was: Re:Velocity Engine) by default+luser · · Score: 1

      Caught up to what? SSE-1 + SSE-2, which are the comparable techonologies to Altivec, both shipped *BEFORE* Altivec.

      Not really. Altivec and SSE were released in the same timeframe in 1999. If you want to talk about "copycat", AMD beat both technologies to market with their 3D-Now! extensions in 1998.

      We will ignore MMX because it was clumsy and limited due to the implementation taking over floating-point registers.

      Altivec on the G4 was unique in that it had two vector processing pipelines, but the poor bus performance meant it was just dick waving. In addition, SSE2 and SSE3 have left Altivec firmly behind, incorporating old MMX instructions and extending support for 64-bit types.

      Furthermore, anyone who has watched the x86 world to any degree has seen Intel and AMD actually *SLOWING DOWN* lately.

      All chip makers are "slowing down" in terms of maximum single-threaded processing speed. They're reaching unexpected barriers.

      Intel has been wallowing with the Pentium 4, but they still have some potential they've been keeping under wraps with Conroe. If overclocks of Dothan / Yonah are any indication, Conroe could push 3 GHz with reasonable power consumption.

      IBM and AMD have been keeping decent pace in terms of single-core processing speed improvements, but AMD has managed to stay in the lead with dual-core, and has managed to up the single-thread speed without massive power increases.

      This is a perfect time for Apple to go "Intel". IBM is behind both Intel and AMD on the desktop, and has almost nothing to offer the mobile market. Now that Apple is on x86, if they don't like Intel, there's always AMD.

      As a closing note, do keep in mind that Moore's Law has only to do with the complexity (number of transistors) doubling every 18 months. It has NOTHING to do with raw single-threaded speed.

      --

      Man is the animal that laughs.
      And occasionally whores for Karma.

    2. Re:Mark parent as troll (was: Re:Velocity Engine) by jcr · · Score: 1

      Caught up to what?

      Integer and floating-point performance. Their SIMD implementation is still inferior to the PPC's Altivec, but you can't have everything.

      -jcr

      --
      The only title of honor that a tyrant can grant is "Enemy of the State."
  47. From TFA: by vought · · Score: 1
    We have long argued that, to really take full advantage of multiprocessor machines, you need to be in a production type of environment, and have a strategy for utilizing the significant resources these computers make available. It is possible to do this, and we fault the Macworld article for not pointing it out ... this was, after all, one of the reasons for OSX.

    What the f*ck?

    If I'm not mistaken, this paragraph says that "To use multiprocessor machines efficiently, you must plan your usage for maximum effect".

    I'm supposed to strategize my word processing now? And MacWorld is at fault whuh?

    I guess the methodology they use is interesting, but it doesn't mean a whole heck of a lot in the context of "CPU utilization". How is that utilization code written? Who knows if it's even 100% accurate on Intel?

    1. Re:From TFA: by ceoyoyo · · Score: 1

      If all you're doing is word processing please put down the benchmarking articles. It doesn't matter, the benchmarks, of any kind, are totally irrelevant to you.

      Now, suppose you decide to compress that movie you downloaded off bittorrent... I mean ripped off the DVD you bought... and then, rather than sitting there staring at it waiting to finish you went off and did something else... maybe WATCHED a quicktime video. Oh, and Mail decided to check your e-mail and had to do some spam filtering. Maybe you've got a couple of Safari windows open and you've neglected to install an adware blocker so they're rendering flash in the background. Now you're really going to appreciate that dual core processor, no strategization necessary.

  48. what program did they use by crashelite · · Score: 0

    i wonder if their bench mark program was universal... dev's say that with out rosetta you gain a 100% increase... so almost all their crap is wrong if it is using rosetta

    --
    (yes i know i suck at spelling fell free to correct my grammar and/or spellin i dont care, im still not going to change
  49. A good comparative benchmark by SteeldrivingJon · · Score: 1

    One good way to get at the heart of the difference between the iMac G5 and the iMac Core Duo would be to measure the time taken to simultaneously do some Quicktime encoding *and* iTunes ripping, rather than comparing each individually.

    That'd help demonstrate the advantage of the second core, in a more real-world manner than SPECMark tests.

    --
    September 2011: Looking for Cocoa/iOS work in Boston area Cocoa Programmer Quincy, MA
    1. Re:A good comparative benchmark by SteeldrivingJon · · Score: 1


      Oh, um, that's what they did to debunk MacWorld's test.

      Nevermind.

      --
      September 2011: Looking for Cocoa/iOS work in Boston area Cocoa Programmer Quincy, MA
  50. it just occurred to me by towermac · · Score: 2, Interesting

    So the dual core Intel is twice as fast at running integer code as the single core G5 it replaces. give or take. yippee.

    Intel wanted in, because long term, Apple was a threat. (AMD is a short term threat) If OSX were to take off on somebody else's processor, well, that's somebody else's processor (that they can't build) selling, and Bill Gates would compile Windows in a heartbeat to run on that processor too. He's done it before for less. So Intel offers Apple everything; all you can eat chips, cheap, delivered, tested and wrapped up in a custom motherboard that you didn't have to build. And less power. And cheap.

    I bet it's shocking what Apple's paying for duos. I bet they're paying next to nothing on the first round. Steve talked bad to them and they said yes sir. There was only one thing Intel insisted on...

    Intel wouldn't put their chip in anything that said "Power" on it.

    "MacBook" is stupid enough that weird California types could have conceivably come up with it. And they did, in a way; when forbidden to use "power", they had to keep the other half of the name; it is a book, after all. And a Mac.

    Anyway, as soon as they can scrape AMD off, look for processor improvements to "plateau" soon after.

    I'm underwhelmed.

    1. Re:it just occurred to me by Anonymous Coward · · Score: 0
      Anyway, as soon as they can scrape AMD off, look for processor improvements to "plateau" soon after.

      Exactly, that's why I just bogh a G4 powerbook 17". I am allergic to CPU architecture monoculuture and probably going to Genesi for my next desktop.

      I just hope that IBM will start producing Power based laptops soon. The main reason for buying the last PPC laptop from Apple was that I develop for embedded Linux PowerPC systems and that I am going to target G4 systems in the same frequency range.

      Until now I had a 400MHz G3 laptop (2000 model) and it was great since most embedded systems I used were 750 processors (F3) in the 350 to 450 MHz range.

  51. Re:better data by bussdriver · · Score: 1

    Install the developer tools and you get a preference pane that lets you turn off the extra cpus. Then you can do a real intel vs g5 test.

    I have a Quad, and the laptop is comin. I plan to test single cpus and compare them; but you are in better shape since you have a 2Ghz G5 to compare with. Some CLI bench marks would be nice; but i'd like to see some comparisons between chips at the same speed that are more cpu bound.

    Isn't anybody interested in comparisons between processors? Years of G4/G5 hype and now it should be easier to compare, and nobody is interested?? It would seem to me that single cpu tests of FFTs using the highly optimized vector library on both would give a good clue of science performance.

    Also, apple didn't use GCC, and there is no way IBM's compiler stands up to intel's compiler. Apple used GCC before to make the G5 look better, because its not fair to use the intel compiler for comparison, it is just too much better than the rest---besides lots of software doesn't use it.

  52. Rofl... by Zero+Sum · · Score: 1

    I have mine sitting in the box next to me yet to be unwrapped, 20, 2gig. And I bought the thing to replace a Dual CPU G5 PowerMac with 3.5 gig which I use to play WoW and not much else nowadays (and that is why I never metamoderate any more). Thanks for making me sure I made the right choice!

    --

    Zero Sum (don't amount to much). [root@localhost]

  53. What about 64 bit? by nule.org · · Score: 1
    Wasn't Jobs selling us on the fact that 64 bit was the way to go only a year ago? Correct me if I'm wrong but these intel core duo chips don't have any of the x86_64 stuff built in, do they? That bothers me more than giving up my precious Altivec. Not that I do much that requires 64 bit processing, but having more than 2gb of memory was a nice option.

    Anyway, I've become an apple whore. I'd take a new iMac and like it. Actually, if the rumored 13.3" widescreen laptop becomes reality I might not be able to help myself.

    1. Re:What about 64 bit? by topham · · Score: 1

      Since the new iMac has a maximum capacity of 2G ram anyway, where's the problem? Really want 64bit? Buy a G5.

      The push to 32bit (particularly on x86) was not simply about the word size, it was also the point where MMU's were expected to make a significant improvement. It was where Intel fixed their architecture to the point of actually being usefull. (16bit protected mode is actually kind of ugly.).

      I have a 1.6Ghz G5, and sometimes next week I will be receiving a 17" iMac. The processor speed of the new iMac will trample the G5 I have, I'll probably relegate it to a fileserver and run OS X Server on it. (Developer licensing makes this easy and legal)

      The push to 64bits doesn't make a lot of sense to me. Yes I bought a 64bit machine, but I can deal with using a 32bit machine for a few more years. The push to 64bit seems very artificial right now, I just don't see the rush.

  54. WOW processor use vs graphics card by DECS · · Score: 1

    WOW is highly dependent on your graphics card. The Intel Mac's PCIe graphics card is far better than what most Mac users are used to: middle of the road 4x AGP or less.

    Watching the processor use graph on my dual 2.0 GHz (first generation) G5, I could turn off one processor and see a minor difference in performance. With both processors running, utilization was about 60% on both at the max.

    When I upgraded my G5's video card, I saw enormous advances in how the game played, how many effects I could turn on, and the top resolution.

    Therefore, I'd say WOW isn't a very good test of processor differences between Core Duo and G5, particularly if you are not comparing a similar bus architecture and video card, which is the real bottleneck.

    --

    Another benchmarking flaw comes from comparing the Intel build of 10.4.4 against the PPC build, as the PPC version isn't identical.

    All the comparisons I've seen so far haven't even bothered to install the same amount of RAM. WTF? Who DOESN'T know that installing another 512 MB in a Mac makes Mac OS X run completely different?!

    One could take any Mac, run benchmarks with differing amounts of RAM, enable different features, disable various components of Mac OS X, and do things like delete caches and adjust things like disk speed and graphics resolution, and get fantastic different results from the same machine.

    Unless benchmarks are done by someone who knows what they are doing, they are completely useless. Of course, benchmarks are generally done by somebody trying to prove a given point, so they are frequently misleading and exaggerated by design.

    When motives aren't getting in the way of the 'truth', incompetence usually is.

  55. But we already knew all of this... by Anonymous Coward · · Score: 0

    Looking at the benchmarks, it's the same old story users of both platforms have always known. The Intel did better than the G5 in some tasks, and the G5 did better than the Intel in others. I doubt one is truly faster than the other. They'll simply be faster at specific tasks.

  56. Systems specs don't have any bearing on 'lag' by @madeus · · Score: 1

    I hate to break it to you, but the only lag you'll experience from either setup will probably be server side (depending on your realm)

    The reference was to the performance of the system, the performance of a system (good or bad) has nothing to do with lag.

    The slang term 'lag', in the context of on line gaming, refers purely to the delay on the network (and/or the server in processing player movement and actions). There has been a trend in the last couple of years or so to confuse this with poor client side performance, but these are completely different things, and it's not a good idea to confuse them.

    Many of the users of WoW have done all they can to reduce the lag on their end.

    They might have upgrade their system, e.g. by adding more RAM, a faster graphic card with more VRAM or a faster processor - that has nothing to do with minimising 'lag' in WoW though.

    When there is 'lag', players experience warping and long delays in performing actions (for themselves and for others), but the framerate is not effected. If your framerate is ever not high enough or the game stutters, it's the system the game is running on. If your running 6600GT might still be running into limitations of the hardware, especially if you have 128 MB or less VRAM (particularly if you are running at a high resolution, or have FSAA or AF enabled).

    The current G4 PowerBooks with the best graphics cards avalible in them still very much struggle with WoW (even the fastest models, I know because I have one, and play WoW on it as well as on my Windows gaming system). Primarily because of the limited bus speed on the G4 models (which is a bottleneck, and cripples 3D gaming performance on them, not least because of the texture data they try and shift around). Current Intel / Windows laptops often struggle with WoW (and other MMO's) too, also because they struggle with handling large amounts of texture data.

  57. Re:WoW by @madeus · · Score: 1

    I know that was obiously a joke, but I'd just like to point out that a good video card and internet connection are much more important than processor speed these days.

    When it comes to Apple laptops, not really:

    WoW is only just playable on a curent high end G4 PowerBook (1.67 Ghz, 1 GB RAM, ATI 9700 128 MB VRAM). It's only slightly better than the performance when running on a iBook with a ~1.4 Ghz CPU, 512 MB and graphics card with 32 MB VRAM, as both systems - like the Mac Mini - are held back by the 167 Mhz Bus speed on all the G4 laptops (and the horribly slow disk speed).

    Other 'Wintel' laptops often struggle with WoW too (though it's generally still better than it's been on the current PowerBook range). The new MacBook pro, on paper at least, should beat everything but the likes of the dedicated "luggable" gamer laptops (e.g. from Alienware).

    Performance of commonly used software, like WoW, will be really intesting to see (and will make or break the purchasing decision for a lot of people I think - probably including me, though I'm likely to wait till the first revision). If it's playable with the draw distance / texture detail / screen resolution at a level comparible to a reasonable desktop then that will be a big improvement in terms of gaming performance (and will bode well for the platform).

  58. Compiler optimizations by AttilaSz · · Score: 1
    I wonder how much compiler optimizations contribute to the performance differences. I mean, stock PPC binaries for commercial apps and even Mac OS X clearly can't be fully optimized for G5 given that they need to run on G3 and G4 processors as well.

    Looking at default XCode settings for "Cocoa Application" project template, it defaults to instruction scheduling optimization for G4, not G5, although you can switch it to G5 (that equals -mtune=970 in GCC). In XCode, the GCC switch for enabling G5 specific instructions isn't even easily accessible! You need to rewrite the architecture string from the generic "ppc" to "ppc970", and sneak in the "-mcpu=970" in the "Other C flags" setting, all manually -- XCode GUI won't assist you in any of this. Then again, probably no commercial software out there utilizes these settings in order for their software to be able to run on a pre-G5 CPU as well.

    What'd be interesting if it'd be possible to build "Universal binaries" that not only carry two code versions - generic PPC and Intel, but three of them: generic PCC, G5, and Intel. I'm not sure this wouldn't work: universal binaries are built with architecture string "ppc i386", and they build if I modify it to "ppc ppc970 i386". I have no idea though how could I detect that I now actually have a three-code-version binary, as well as to detect if indeed "ppc970" is being loaded on a G5 machine in Mac OS X.

    OTOH, Intel binaries can be fully optimized for the Core Duo CPU, as there's no compatibility baggage there.

    --
    Sig erased via substitution of an identical one.
  59. Does Rosetta "do the impossible"? by GPS+Pilot · · Score: 1

    Rosetta is so impressive that while non-native applications will run slower, it's damned good until native versions of those applications come out, too.

    I've read many times that while you can acceptably emulate x86 on PowerPC, emulating PowerPC on x86 is damn near impossible. So to those of you who understand instruction sets far more than I do, how about it... with Rosetta, has Apple accomplished the "nearly impossible"? Would they win the Nobel Prize in CompSci, if such a thing existed?

    --
    That that is is that that that that is not is not.
    1. Re:Does Rosetta "do the impossible"? by topham · · Score: 1


      Apple cheats. They use the generated binary as input to an x86 compiler. As I understand they actually licensed Rosetta, it wasn't done in house. Regardless of that I do think it is impressive, not only does it work well enough but it is seamless for the user.

      It isn't perfect, but it is damn good.

  60. Most Benchmarks Are Crap Anyway by strider_32767 · · Score: 1

    You want to show me how fast the Core Duo iMac is? Do an MPEG-2 encode of a two hour .dv file to a disk image (eliminates DVD drive bottleneck). Do the same thing with the Quad G5. Compare. Any test designed to evaluate the horsepower of the machine should involve at least 99% processor utilization. Any tester not willing to do that should not receive machines for evaluation. Grrr. And please, stop using Quicktime encodes and iMovie effects in tests. Those only use a single processor. Only tells you how little the idle processor contributes to performance.

  61. Wow is definitely something to brag about by excalibur313 · · Score: 1

    After applying the intel patch so that it runs natively WOW actually runs at over 100 frames/second on the lower end model!

  62. How is it "cheating"? by GPS+Pilot · · Score: 1

    How is it "cheating"? They are sucessfully running PowerPC code on an x86 processor, and not incurring a 99% performance penalty.

    What it boils down to, I think, is that those who said this was "impossible" were just plain wrong.

    --
    That that is is that that that that is not is not.