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AMD 6 Core WCG production discussion

Discussion in 'World Community Grid (WCG)' started by Paulieg, Apr 27, 2010.

  1. Paulieg

    Paulieg The Mad Moderator Staff Member

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    So, with the release of the new AMD chips with 6 physical cores, there could be some serious potential for AMD crunching. This is the place to discuss your thoughts on expected production from these chips and results you've achieved with them.
     
  2. [Ion]

    [Ion] WCG Team Assistant

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    I'd figure it would be almost exactly 50% better clock-for-clock than the Phenom II X4s. I disabled 2 of the cores on my X4 955 about a month ago to see how WCG would do with half as many cores (and therefore twice as much L3/core), and the results? Each RICE WU that takes exactly 7 hours (+/- a minute or two) was worth approximately 2% more points. So I'm not sure how it is for the rest of the projects, but if all of the other projects are like RICE, I'd expect a ~48% increase in PPD.
     
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  3. ERazer

    ERazer

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    what u think around 4-5k ppd? im shooting in the dark hre :p
     
  4. AlienIsGOD

    AlienIsGOD

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    W/E the number it will be a HUGE improvement over my X2 240. I cant wait till I can afford one of these puppies..
     
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  5. [Ion]

    [Ion] WCG Team Assistant

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    Well, my estimator, which I've found to be pretty much spot-on in the past for my X4 955 estimates ~2100PPD from my X4 955 @ 3.4ghz...so we'd be looking at around 3k PPD from an X6 1090T @ stock, or around 3800PPD @ 4ghz. Unfortunately not enough to even come close to dethroning an i7 :(
     
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  6. GREASEMONKEY

    GREASEMONKEY

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    I'll be adding one to my "JUNKYARD" this friday to get crunching at 100% on all 6.I'm hoping for 3,600 per day.
     
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  7. [Ion]

    [Ion] WCG Team Assistant

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    Awesome!
    If you can get me some PPD info, I'll see about adding it to the estimator!
     
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  8. blkhogan

    blkhogan New Member

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    Cant wait to see the numbers from you guys. It will be this fall before I will be able to start adding them to my arsenal, money is tight for now. :( :toast:
     
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  9. theonedub

    theonedub habe fidem

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    I would love to see 4k production at a modest OC (under 4ghz possible?). If that is possible I might replace my i7. Keep us updated :D
     
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  10. trt740

    trt740

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    I think a I7 will still out crunch it but I bet it is close.
     
  11. theonedub

    theonedub habe fidem

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    I think you are right. Shouldn't be too long before the numbers present themselves and we know for sure.

    One thing is for sure- I would pocket a good amount of money switching to an AMD setup :)
     
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  12. blkhogan

    blkhogan New Member

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    If I could get an AMD rig to do around 4k Id be in heaven. :laugh:
     
  13. Chicken Patty

    Chicken Patty WCG Moderator Staff Member

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    I'd say these x4's would do about 3.8-4k a day going a bit on the low side. Although it doesn't run 8 projects like the i7 it does have six REAL cores who will process more work than the four real cores of a i7 with 2 virtual cores from the HTT. So I don't know, def. a run at the i7 clock for clock in crunching.
     
  14. crazyeyesreaper

    crazyeyesreaper Chief Broken Rig

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    i dont know cp it seems in alot of things the virtual cores almost scale as well as real cores it would be close but i7 is still going to have the edge from what ive seen a 3.4ghz x4 compares to a 2.6 i7 roughly untill lots of multi threading takes place id say 3.2ghz the 1090T stock should be about 5-7% slower then the i7 920 at stock
     
  15. Chicken Patty

    Chicken Patty WCG Moderator Staff Member

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    I don't think it'll match it, but it'll def. be a run IMO. Of course I am just throwing numbers together without much though here :laugh:
     
  16. crazyeyesreaper

    crazyeyesreaper Chief Broken Rig

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    well think of it this way compare an i7 to a Phenom II with HT off find out where the clock speeds match up then add 50% ;) not perfect but by that method and other benches... you should be able to get within a few hundred points
     
  17. Chicken Patty

    Chicken Patty WCG Moderator Staff Member

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    :confused::confused:
     
  18. crazyeyesreaper

    crazyeyesreaper Chief Broken Rig

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    alright take a Phenom II 965 compare it to an i7 with HT OFF 4 cores vs 4 cores then compare to with HT on... then by finding out what the 4 extra threads add look at the phenom II and add half its current PPD to the total and you should have a rough estimate of where each stands


    example i7 at 4 thread - 2000 pts with 8 threads its 4000

    phenom II 4 threads is 1700 pts but with 6 threads is 2550 or something like that

    not exact but you can see where im going you have i7s and a phenom quad ;) crunch some numbers and there ya go
     
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  19. Chicken Patty

    Chicken Patty WCG Moderator Staff Member

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    I get what you mean now, so my estimations are somewhat reasonable. Right?
     
  20. blkhogan

    blkhogan New Member

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    Ok. Ive been reading into this i7 stuff. I dont get the extra 4 threads, can some one tell me how it works in short? Im as dumb as a box of rocks when it comes to Intel. :shadedshu
     
  21. ERazer

    ERazer

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    Last edited: Apr 29, 2010
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  22. blkhogan

    blkhogan New Member

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    So, there are 4 physical cores, but each core can read 2 different threads of information at a time? Ahhh... now i see.
     
  23. [Ion]

    [Ion] WCG Team Assistant

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    Yep. From what I've seen, i7s tend to do ~35% better for WCG with HT enabled vs disabled, but this is really the upper limit of the performance boost from HT. (it does 2x as many WUs at once, but each one takes longer)
     
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  24. blkhogan

    blkhogan New Member

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    So Intel's hyper-threading is different than AMD HT-Link? Thats what was confusing me, its a 4 core but can do 8 threads of info.
     
  25. theonedub

    theonedub habe fidem

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    QPI is the Intel version of HyperTransport

    The thing with i7s (from my exp) is that it gets more WUs done, but they all under report, so you get less points per WU. The sheer number of WUs done however still increases your PPD by that 35% or so.
     
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