It has more to do with the fact that Apples G4 implementations have been more brute force than their G3 implementations
G3 900Mhz w/512KB L2 on a 100Mhz bus, no L3 G4 1000Mhz w/256KB L2 on a 167Mhz bus, 1MB L3
If they were to go balls out with the G3 and run the FSB at 200Mhz (which the IBM spec sheets say they'll do.) paired up with some appropriate ram.. I don't think it would _outrun_ the G4, but it would close the gap one hell of a lot.
the total for dual G5s and the support chipset being over 100w?.. sure
IBMs figures on the 1.8Ghz part peg it at 42w heat dissipation, there's NO way they could possibly have gone from 42w to 100w in the space of 200Mhz.. it's just absurd to suggest it.
Buy Mac.. use for a year sell Mac for large portion of purchase price put proceeds towards newer Mac (or a hooker, or whatever.)
I'm forced to sell older machines before buying new ones simply because I'm running low on space to put the damned things, if machine A holds it's value better than machine B that's an added bonus as far as I'm concerned.
"Incidentally, Moto's DDR mode on the interface for the 7455's L3 cache gives a pretty marginal real world boost over the SDR mode - www.powerlogix.com have an interesting whitepaper on just this subject."
It is logical to conclude that the L3 cache, due to its size, helps more with latency bound tasks, as tasks that need bandwidth will typically have datasets too large to fit in L3 to begin with?
Shouldn't be that difficult to rig up a bandwidth intensive something or other with a 1MB dataset if any coders are reading this.. ?
" well, I've read some moderately convincing arguments that - because of the low latency, 4GB/sec L3 cache that the current top end G4s sport - memory bandwidth is not the bottleneck that we'd all like to believe. It seems that the REAL bottleneck is simply the low clock speed and lack of integer and FP execution resources that the 7455 has available."
The only problem with that argument is that the bus tops out whenever you're churning on a large dataset.. like video editing...
There's no doubt that the L3 helps, but actual memory bandwidth would help a whole lot more.
"I use gigabit ethernet in the home. I am constantly copying large movies from my G4 to my iBook to bring to clients. There, you're proved wrong yet again."
Nice troll, nice work ignoring the fact that Apple can't do anything about the 7455's bus because that's what Motorola are manufacturing...
sure, the G4 would benefit from a 200Mhz DDR FSB, but if Motorola aren't making them with DDR bus logic validated at 200Mhz, there isn't a damned thing Apple can do about it.
Just a short FYI, the 1.2Ghz PowerPC 970 goes through about 19 watts, a 1Ghz PowerPC 750FX (current G3) goes through about 6 watts, so the 750FX can be used in enclosures where the 970 or a 7455 would be too hot.
okay, so the 970 will absolutely BURY the G4 performance wise, and outstrip it on heat output as well (22w @ 1Ghz I think), so the G4 is pretty much a dead end at this point.
g{FireWire 800? Show me a hard drive that can even write your data at 400Mb/s or show me a piece of consumer hardware that NEEDS 800Mb/s today. There is no big hurry to adopt FireWire 800.}g
400Megabits/second = 50 Megabytes/second a fair few higher end ATA disks can top that on sustained reads/writes
and you're assuming that only one device is attached to the bus.. that's not always the case.
bzzt, quake 3's physics are tied to the framerate, you ca jump slightly higher with a higher framerate. ergo, with 125fps+ you can get to locations via jumppads that are inaccessible otherwise.
and the fps thing.. well, you're just outright wrong on that, I can easily see a difference between 30fps and 120fps:)
I have a Nikon Coolpix 4500 with a 1GB Microdrive in it, and I've had >300 shots from a single battery before now. (full capacity for a 1GB MD is ~580 shots) No idea how that would compare to a 1GB flash card, but I figure you might have use for the information.
Slashdot Mirror
Expose can switch between the various windows of the same app, in much the same manner as it switches between multiple apps.
the 'flick of the wrist' factor plus it being visual identification rather than having to read something gives it an edge IMO.
well then, your problems have been answered, almost. :)
by Expose
change windows in the same app, or change apps, with the flick of a wrist
"Apple have not published results of tests against a dual P4, they would only look bad if they did"
Yes, they would look very bad for publishing results for processors that don't actually exist..
Apple DID test the G5 against "P4 Xeons" however, and thats as close to a dual P4 as you're going to get...
It has more to do with the fact that Apples G4 implementations have been more brute force than their G3 implementations
G3 900Mhz w/512KB L2 on a 100Mhz bus, no L3
G4 1000Mhz w/256KB L2 on a 167Mhz bus, 1MB L3
If they were to go balls out with the G3 and run the FSB at 200Mhz (which the IBM spec sheets say they'll do.) paired up with some appropriate ram.. I don't think it would _outrun_ the G4, but it would close the gap one hell of a lot.
Nonsense
the total for dual G5s and the support chipset being over 100w?.. sure
IBMs figures on the 1.8Ghz part peg it at 42w heat dissipation, there's NO way they could possibly have gone from 42w to 100w in the space of 200Mhz.. it's just absurd to suggest it.
"Wireless is useless in a desktop machine"
The desktop machine I'm sat at that's 30' and two 12" thick concrete walls away from the nearest switch would like to argue that.
I doubt Dell are selling dual 3.2Ghz Xeon machines.. afaik the top Xeon is still the dual 3.06/533 part.
Except that Motorola couldn't reliably MAKE PPC7400's at 500Mhz so Apple had to scale back to 450 DP at the top end.
Except that the official designation for the G3 isn't 960, it's 750
as in "My 900Mhz iBook has an IBM 750FX in it"
"it will at least give Intel/AMD a run for the money (remember, the 64 bit stuff will be out by then)"
You mean Monday the 23rd of June when you say 'then', right?
WWDC Keynote, 10am PST (I think) *gets popcorn*
Buy Mac.. use for a year
sell Mac for large portion of purchase price
put proceeds towards newer Mac (or a hooker, or whatever.)
I'm forced to sell older machines before buying new ones simply because I'm running low on space to put the damned things, if machine A holds it's value better than machine B that's an added bonus as far as I'm concerned.
except that 200Mhz Pentium Pros were on the market at roughly the same time as the 200Mhz 604e, and they were comparable performance wise.
(the PPro having better caching/bus architecture, and the 604e being more of a brute force execution core...)
Maybe you were thinking of 450Mhz (the clockspeed at which the G4 got stuck for 18 months...)
"but they're still so overpriced. Even used Macs on ebay seem way out of line. "
Look at that the other way around, Macs hold their value well.
"Incidentally, Moto's DDR mode on the interface for the 7455's L3 cache gives a pretty marginal real world boost over the SDR mode - www.powerlogix.com have an interesting whitepaper on just this subject."
It is logical to conclude that the L3 cache, due to its size, helps more with latency bound tasks, as tasks that need bandwidth will typically have datasets too large to fit in L3 to begin with?
Shouldn't be that difficult to rig up a bandwidth intensive something or other with a 1MB dataset if any coders are reading this.. ?
" well, I've read some moderately convincing arguments that - because of the low latency, 4GB/sec L3 cache that the current top end G4s sport - memory bandwidth is not the bottleneck that we'd all like to believe. It seems that the REAL bottleneck is simply the low clock speed and lack of integer and FP execution resources that the 7455 has available."
The only problem with that argument is that the bus tops out whenever you're churning on a large dataset.. like video editing...
There's no doubt that the L3 helps, but actual memory bandwidth would help a whole lot more.
"I use gigabit ethernet in the home. I am constantly copying large movies from my G4 to my iBook to bring to clients. There, you're proved wrong yet again."
uh...
ibooks have 10/100 ethernet, not gigabit?
Nice troll, nice work ignoring the fact that Apple can't do anything about the 7455's bus because that's what Motorola are manufacturing...
sure, the G4 would benefit from a 200Mhz DDR FSB, but if Motorola aren't making them with DDR bus logic validated at 200Mhz, there isn't a damned thing Apple can do about it.
Just a short FYI, the 1.2Ghz PowerPC 970 goes through about 19 watts, a 1Ghz PowerPC 750FX (current G3) goes through about 6 watts, so the 750FX can be used in enclosures where the 970 or a 7455 would be too hot.
okay, so the 970 will absolutely BURY the G4 performance wise, and outstrip it on heat output as well (22w @ 1Ghz I think), so the G4 is pretty much a dead end at this point.
Speaking of bad info
"Intel procs are all multi-proc capable/aware, so that data point is a bit behind."
Not so, if you want SMP with Intel these days you need a XEON, same basic core as a P4, but a different socket. (and higher pricetag)
g{FireWire 800? Show me a hard drive that can even write your data at 400Mb/s or show me a piece of consumer hardware that NEEDS 800Mb/s today. There is no big hurry to adopt FireWire 800.}g
400Megabits/second = 50 Megabytes/second
a fair few higher end ATA disks can top that on sustained reads/writes
and you're assuming that only one device is attached to the bus.. that's not always the case.
Did I say I could distingush each frame?..
no, and that's the entire point, it appears smooth in motion and not a bunch of one-after-the-other seperate images.
as for Q3, no, it wasn't intentional, Q3 wouldn't even RUN at 125FPS on the hardware available when it was developed.
bzzt, quake 3's physics are tied to the framerate, you ca jump slightly higher with a higher framerate. ergo, with 125fps+ you can get to locations via jumppads that are inaccessible otherwise.
:)
and the fps thing.. well, you're just outright wrong on that, I can easily see a difference between 30fps and 120fps
I have a Nikon Coolpix 4500 with a 1GB Microdrive in it, and I've had >300 shots from a single battery before now. (full capacity for a 1GB MD is ~580 shots)
No idea how that would compare to a 1GB flash card, but I figure you might have use for the information.
Hi, I'm English, if this passes, I'm OUT OF HERE.
There, satisfied?
(I'm entirely serious too.. I didn't vote for our current government, I'm not about to sit back and go 'ah well, I asked for it'))
You mean you "didn't install the drivers properly" ?
'Cause this guy doesn't seem to be stuck at 20fps