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VIA K8T800 Chipset Preview - Dual Opteron in Action

Mr.Tweak writes "It has been a long time coming but we are finally reaching the beginning stages of 64-bit mainstream computing. AMD has been the first to bring a 64-bit processor to the market with any true support in the Opteron. VIA is one of the key chipset companies supporting AMD64 and today TweakTown takes a preview look at their new K8T800 chipset with AMD Opteron 242 and 244 processors. 64-bit computing is boarding - don't miss the train!"

25 of 258 comments (clear)

  1. Yes, but... by Sir+Haxalot · · Score: 5, Funny

    64-bit computing is boarding - don't miss the train!
    I'll get on the train when the fare is a bit less.

    --
    I have over 70 freaks, do you?
  2. Well. by JanusFury · · Score: 5, Insightful

    As much as I'd love to board the train, the ticket price is a bit expensive, especially because I don't know exactly where the train goes.

    I'm sure this is true for most other computer users as well. 64-bit on the x86 desktop is not really a 'mature' technology, even though it's been done before with Alpha and Itanium... I for one would hate to spend lots of money moving to an Opteron-based platform, to find out that one of my devices doesn't work or that one of my programs doesn't work. So I suspect that the risk involved (even though it's rather minimal, really) probably is going to keep a lot of people from moving to Opteron and co. for a while.

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    troll::post();
    1. Re:Well. by Electrode · · Score: 4, Insightful

      Because in 64-bit mode, the size of long is 8 bytes. Some programes have a major problem with that, as I've so painfully discovered...

    2. Re:Well. by Ed+Avis · · Score: 5, Informative

      For the relatively small number of programs (at least on Linux) that have trouble with 64-bit longs, just compile as i386 code. The Opteron is backwards compatible with 32-bit code and gets reasonable performance out of it.

      --
      -- Ed Avis ed@membled.com
    3. Re:Well. by hattig · · Score: 5, Informative

      The really useful thing about the Opteron isn't the 64-bit aspect, but the fact that in 64-bit mode you get a lot more registers, etc, to play with. This in turn means that code compiled for the 64-bit mode will run faster than the code compiled for the 32-bit mode. Also the on-die memory controller means that memory latency is much lower, which in turn means things run faster. I'd buy a dual Opteron machine over a dual Xeon machine anyday.

    4. Re:Well. by Daniel+Phillips · · Score: 4, Informative

      it's not the price that's holding me back (I'm considering a dual xeon for some serious SGML crunching) but rather the question of "what's the added value of 64bit for me here ?"

      I'm doing fine with my 3GB Ram...


      On a 32 bit architecture, the kernel has to use nasty, expensive tricks to address memory over 3/4GB (for the default 1:3 userspace/kernel memory split). These tricks require lots of TLB invalidations, which are painfully slow, since the cache has to be reloaded from main memory. 64 bit architectures can just directly address that high memory, so you get a speed boost. How much, I don't know yet, since I don't have an Opteron at hand to benchmark. It will be quite measurable.

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    5. Re:Well. by Anonymous Coward · · Score: 4, Interesting

      AI stuff can benefit, since Lisp on 64-bit architectures is especially nice. Lisp code on 64-bit architectures with 64-bit address space is significantly better performance than on 32-bit architectures, as you can implement many language primitive datatypes within the 64-bit quad, and still have a few high-bits for type-tagging, making a sort of virtual tagged memory architecture.

      That means a dynamically-typed language with comparable performance to statically-typed.

      Historically, one of the significant markets for Alpha processors was people running the Genera virtual lisp machine.

  3. AMD the first? by LeninZhiv · · Score: 5, Interesting

    I think the distinction between PC and RISC is quickly becoming obsolete, and so perhaps one should be including the UltraSparc IIe that's in the SunBlade 100/150, which retail for less than most new PC's.

    By all accounts this is not the best of the current 64-bit chips, but I think it was the first to be offered in "PC-priced" systems.

  4. 64-bit computing is just now boarding? by Surak · · Score: 5, Informative

    Where have you been? I've had a 64-bit machine for almost 5 years now. ;) It's even been EOLed since July 2002.

  5. Readable hardware reviews by Ed+Avis · · Score: 4, Insightful

    Just once, it would be nice to have a link to a motherboard review that wasn't split over 15 different sections.

    'Without dragging on anymore, let's see what VIA's K8T800 chipset is capable of' - well, without dragging on any more than going to the next page after about two paragraphs...

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    -- Ed Avis ed@membled.com
    1. Re:Readable hardware reviews by semaj · · Score: 4, Informative

      I know it's a pain... more advertising revenue for them though I guess.

      I always hit the printable version and cancel the print dialog. Plus that means modem users have a chance to read the article in less than a week. :-)

      --
      Meep meep
  6. Memory by I_am_Rambi · · Score: 5, Interesting

    The via board hinders the opteron. Instead of utilizing both on-chip memory controllers, it only uses one. You can see better results if you added a second set of memory banks for the second opteron to use.

    There are more dual boards also including Tyans Thuder K8W. Rumor has it that nvidia will be coming out with a nforce chipset that will support dual opterons also.

    Benchmarks
    246 Benchmark
    Overclocked 246

  7. Pointless use of dual proc by bgp4 · · Score: 4, Interesting

    While it's slick that they had a dual proc board and all... none of the tests they used used the dual proc-ness of the system. They even indicate in their results that the second proc just threw overhead into the system.

    They've asked for help getting some dual proc benchmarking software. It would be great if someone could help them out. I'm really curious what that box is ACTUALLY capable of. IT's a goodly amount of horsepower with a reasonable amount of L2 cache with 64-bits of data-y goodness. It could make a heck of a "workgroup" size database server.... for a lot less than Sun's workgroup servers.

    I think this next gen of procs (and their 64-bitness) is going to put another dent in Sun. First, lowend *NIX servers based on x86 put a huge dent in their pizza box market. Now, consumer grade 64-bit procs will probably start to eat heavily into their midrange market (like the 220R and that realm). In the big iron... well, that's contentious already. No need to to mess with them there ;)

    --
    I'm down with that, as it were
  8. C'T Review by gmania · · Score: 5, Informative

    There is a nice review in the latest german C'T too (issue 18 - page 36) of the MSI K8T Master2FAR board with dual opteron support, Via K8T800/VT8237 chipset and a lot of nice features (AGP, SATA, GBit Ethernet). Size constaints meant only a single memory-bus is implemented, a 5-10% speed bump on memory access. Another downside is no PCI-X slots.

    The nicest thing though is the price: 280 euros. Sounds like a good workstation board.

    1. Re:C'T Review by DarkSarin · · Score: 5, Informative

      go for this the s2885 from tyan. It has PCI-X, AGP, SATA, GBe, and hold 16GB RAM... Can't lose.

      --
      "We don't know what we are doing, but we are doing it very carefully,..." Wherry, R.J. Personnel Psychology (1995)
  9. Overclocking, tweaking, overclock, tweak by dorlthed · · Score: 5, Funny

    Does anyone else think this site is a little weird? "PGA or Pin Grid Array can be separated into two parts: the first being Pin, which in this case is the small metal pins we see coming from the bottom of the processor and the other is the Grid Array." Well bless my stars! Who knew?!

  10. This is great news for us by Rosco+P.+Coltrane · · Score: 4, Insightful

    ... the majority of people who want to pay less for the same computers. Whenever a new super-duper computer comes up, a minority fringe with too much money (that I was once part of) blows ungodly amounts of money to get it, driving down the cost of perfectly serviceable, good, fast, but older computers for the rest of us.

    So I say go AMD64 and go KIA, so I can buy those Athlons 2000+ based-machines I need even cheaper.

    --
    "A door is what a dog is perpetually on the wrong side of" - Ogden Nash
  11. 64 bit processors running 32 bit software by mkosmul · · Score: 5, Insightful

    Sure, the benchmarks are impressive, but it would be nice to see more benchmarks using 64-bit-optimized software (eg. an optimized gromacs). 32 bit software just doesn't use all the power these chips have.

  12. "Finally"? by mblase · · Score: 4, Informative

    It has been a long time coming but we are finally reaching the beginning stages of 64-bit mainstream computing.

    I guess you didn't hear about the Apple PowerMac G5 when it was announced months ago and began shipping last week, then....

    1. Re:"Finally"? by FatherOfONe · · Score: 4, Informative

      Well I have had my dual Opteron system for about three weeks now, AND I ordered a G5 over a month ago.... The G5 still hasn't shipped to me (I ordered the 1.8GH model). Even if it did the Opteron was out more than a month ago.

      Now granted the article should say something like, this is the first somewhat affordable x86 chip to provide 64 bit computing.

      There are many other links that have excellent benchmark results of the Opteron. Specifically, toms hardware has a great review, but to sum most of the review up...
      The dual Opteron 244 kicks the crap out of a dual Xeon in most linux server type benchmarks. This is WITH 32 bit code. The next step is to get code that is still 32 bit but compiled for the Opteron. i.e. Oracle wich is out now. This gives you another small gain in performance and then lastly you can test again with pure 64 bit compiled programs. The last "MAY" give you some performance increase over 32 bit programs recompiled, but that depends on the program. An example would be a simple "hello world" would not run any faster, but a database that needs more than 4GB of memory should perform better.

      So for our company we didn't compare the Opteron to a Itanium, but to a Xeon and the dual Opteron smokes it.

      Note, that I always say dual Opteron, because a single Opteron doesn't perform any better than the current 32bit X86 chips. In most cases it performs worse. One of the key factors with the Opteron is the way the chips talk to the front side bus. This is currently the bottleneck in most dual/quad processor x86 systems. AMD has somewhat handled this bottleneck by allowing both chips to have a separate path to "some" RAM and providing a larger amount of data to pass from processor to RAM. I can't speak for the quad and eight way systems, but for the dual processor systems this makes a HUGE difference.

      In our environment, a dual Opteron 1.8GH beats a QUAD 2.8GH Xeon in performance (with Oracle). Given that Oracle charges us 15k per CPU + 4k a year, that is a huge savings, and we are not forced to go to a pure 64 bit system today.

      Intel addresses the front side bus issue to RAM by increasing the on die cache of the Xeon. So they released a 1MB version of the Xeon 3GH (they had a 512MB version before), to combat the Opteron. The problem is that it didn't help that much. Intel's solution would be to include X86 code, "done well, not the crappy way it is done now" in the Itanium, and lower the price to under a grand. I doubt they will do that any time soon, so it looks like this will give AMD a good path to the small server market. Factor that in with IBM and SUN wanting to use their stuff in new server, things look ok for the Opteron.

      I still don't know how well the AMD Athlon 64 will be though. That chip isn't due to be released until next month. That is the replacement for the current Athlons, and for AMD's sake it better beat a P4 in most Windows stuff.

      --
      The more I learn about science, the more my faith in God increases.
  13. enough already by BenjyD · · Score: 4, Interesting

    Repeat after me: 64 bit processors aren't new. There's no new "computing fad" leaving the station. No new architectural wonder.

    They aren't even new in desktop machines. I just threw out an Alphastation4 with a 64 bit 21064 from 1996 or something (nearly put my back out lugging the thing down the stairs. They built computers to last in those days). That was a competitor with the Pentium Pro IIRC. Many of the machines where I work were 64 bit ultrasparc before we started to go 32 bit x86.

    That said, the new athlon does look pretty damn fast.

  14. Slashdoted...Here is the Article... by da5idnetlimit.com · · Score: 4, Informative

    For those of you that wanted the grapics, I'll be taking an ASCII Art Course for the next one 8p

    Introduction

    We saw the release of the Opteron processor earlier this year which was powered by AMD's own 8131 Northbridge. With many months passed since and a lot of R&D invested, it was time to see what VIA were capable of when given the latest 64-bit processor to play with from AMD. The latest chipset to hit the market from the Taiwanese chipset manufacturer comes in the shape of the K8T800 and carries over everything you need when it comes to inserting those brand new processors into VIA-powered motherboards.

    The K8T800 chipset carries over with it the latest Southbridge from VIA, the VT8237, which we were very impressed with when reviewing the PT800 only last month. It carries over the same features which we will look more into later on.

    Due to the limitation in server hardware and server benchmarking software, we have chosen to write a preview on the chipset with a lot of benchmarks with different processor environments. We will help give people an understanding of the technology and the future it has.

    Without dragging on anymore, let's see what VIA's K8T800 chipset is capable of when powered with some of the newest and most powerful processors to hit the market from Advanced Micro Devices.

    The Opteron Processor

    Before we get into talking about the chipset, we will take a moment to have a look at the processor which will be accompanying our test motherboard today.

    The AMD Opteron is the latest processor to hit the market and carries the long awaited 64-bit architecture to the retail market. While we have seen Intel release a 64-bit processor to the market in the shape of the Itanium and Itanium 2 some time ago, it was one product that the end-user would not consider purchasing due to its high price tag and lack of chipset support.

    The Opteron comes with a massive 940 pin count which is the largest of any processor implementing the PGA format. PGA or Pin Grid Array can be separated into two parts: the first being Pin, which in this case is the small metal pins we see coming from the bottom of the processor and the other is the Grid Array. The Grid Array is the formation the pins are in, which here is a 940 pin formation. Together we have the highest pin count currently on the market for this kind of technology. The Opteron processor also carries a huge 1MB of L2 cache to help when it comes to processor-hungry applications. The Opteron also has three Hyper Transport buses which we will look into more in just a moment.

    What else AMD has in store for 64-bit

    While we are on the subject of AMD processors, we may as well have a quick look at what else AMD have in store for the 64-bit market.

    The cheapest of AMD's 64-bit line will be known as the Athlon 64 and will most likely be launched next month in Taiwan at Computex 2003. The Athlon 64 will be the entry level 64-bit processor and the mainstream product with a pin count of 754 replacing Athlon XP. Athlon 64 has the smallest amount cache out of the group with only 512k and will only support Single Channel DDR and one Hyper Transport Bridge meaning it is not SMP-capable.

    The other processor which will be making an introduction, which seems to be confusing a lot of people, is Athlon FX or Athlon 64 FX. The Athlon FX will be the enthusiast processor, according to speculation currently floating around. Consisting of 1MB cache and three Hyper Transport buses, the only difference between it and the Opteron is support for SMP. The Athlon FX will consist of 939 pins; the pin that is missing is the one that gives it the ability to run Dual Processor mode.

    Hyper Transport Buses

    As we just mentioned, the Opteron and the Athlon FX will consist of multiple HT (Hyper Transport) buses, while the cheaper mainstream Athlon 64 will only have one.

    One of the buses goes to your peripherals (your AGP slot, PCI slot, etc). This is the only one on the Athlon 64. The s

    --
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  15. Re:The first 64-bit platform (with qualifiers...) by Junta · · Score: 4, Informative

    Obviously you didn't do any research. Here is a board I've gotten to work with, complete with AMD chipset:
    http://www.amdboard.com/msi_k8d_master.h tml

    And all currently announced chipsets:
    http://www.amdboard.com/opteron_chipset s.html
    AMD themselves, nVidia, and VIA.

    --
    XML is like violence. If it doesn't solve the problem, use more.
  16. I allready rode the train. by jgarland79 · · Score: 5, Funny

    I allready rode the 64bit train to DEC Alphaville and back.

    --
    Microsoft Windows runs on stress and frustration.
  17. I can't wait... by djeaux · · Score: 4, Informative
    Let's see ... 64-bit WinXP is due some time next year. Longhorn some (ambiguous) time after that. I know /. is the home of the *NIX faithful, but that's a very small percentage out in the real world.

    Are we about to enter 18 months to 2 years of mostly running 32-bit apps on 64-bit hardware? (Or even longer than that, if we recall that "32-bit Win95" was really 16-bit in sheep's clothing.) And what's a "generation" for hardware? 2 years?

    There will probably be some nice bargains on 32-bit boxen later this year & next, I'm sure. And they're gonna run those old 32-bit apps just fine. Then, when they wear out in 2-3 years, you can upgrade to 64-bit hardware to actually run 64-bit apps.

    In other words, that first train trip is going to take you to an amusement park that's still under construction.

    --
    "Obviously, I'm not an IBM computer any more than I'm an ashtray" (Bob Dylan)