gtx 480 sli and gts 250 for physx question

Discussion in 'Videocards vs General Purpose - NVIDIA Ageia PhysX' started by wheeljack12, Apr 24, 2010.

  1. wheeljack12

    wheeljack12 Guest

    I noticed that only 197.41 and 197.55 are for gtx 480. And I can only use 197.45 for the gts 250. Does that means I have to install two sets of drivers then to get all of the cards recognized? Or is nvidia going to start making general drivers for all gtx 200/400 series?
     
  2. TheHunter

    TheHunter Banned

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    its gonna be overkill and i doubt it will help much maybe bottleneck more becuase 400 series have better physx algorithms, but anyway here is what you need to do.

    open NV_DISP.inf file in extracted nvidia folder (usually c: nvidia/display driver), find the "main strings marked bold" and add these lines

     
  3. wheeljack12

    wheeljack12 Guest

    what if I just use a modded .inf for the 197.55 drivers? That would give me the gts 250 and sli gtx 480,right?
     
  4. TheHunter

    TheHunter Banned

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    yep, btw but you need to use 197.55 driver too, not just inf file and use it on 197.41.
     

  5. wheeljack12

    wheeljack12 Guest

    that's the idea. Use the 197.55 driver and modded 197.55 inf file.
     
  6. TheHunter

    TheHunter Banned

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    yea lol sry, i thought maybe you would tried to mix them ;)
     
  7. nhlkoho

    nhlkoho Ancient Guru

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    You would probably get better performance if you just left the GTS250 out of it. Let the two 480s handle physx
     
  8. IPlayNaked

    IPlayNaked Banned

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    I agree. The 250 is actually going to slow the 480s down, if anything.
     
  9. leexgx

    leexgx Member

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    one GTX480 on its own can easy handle the PhysX and most games on high settings, and 2 GTX480 should be no problem for any currant games
    games at best may use 1%, Benchmarks do not count as they are made to show the difference with Physx off and on but they are doing a lot more then what would happen in an norm game

    GTX480 even more so handle Physx and due to the way it handles work loads
    look at Threads and Scheduling part on that page (or all of it)
    http://www.anandtech.com/show/2977/...tx-470-6-months-late-was-it-worth-the-wait-/3

    i would not use an dedicated Physx card personally with an GTX480 seems very unneeded

    (hmm intelli txt ads, block that domain for an start)
     
  10. Fusion_XT

    Fusion_XT Master Guru

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    Well adding my GTX285 with a Single GTX480 did improve my fps in games like Dark Void, Metro2033 and Cryostasis.

    Adding another GTX480 improved it even more so i ditched my GTX285 :).

    Tho for some reason going to SLI made my FPS go all over the place... Like in Metro2033 and Crysis from like 100fps looking inside a tunnel or a mountain to 25fps when moving my mouse like a inch :puke2: ..

    I HATE SLI FFS ! ... why did i buy it ?! i DONT KNOW !

    Ps. Metro2033 and Crysis/Warheard running at:

    Metro2033

    1680x1050
    Very High
    DX11 Tess, Dof off.
    4x MSAA
    16x AF
    A.PhysX on.

    Crysis/Warhead.

    1680x1050
    Enthausiast
    DX10, 64Bit
    16x AF
    V-Sync on.
     

  11. TheHunter

    TheHunter Banned

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    did you try and run metro without antialisaning? it already uses analytical antialisaing when you use v.high.. enabling 4xaa on that kills the performance allot.

    here isn't sli but as you see even without aa it struggles and has lowest 29fps..
    http://www.xbitlabs.com/articles/video/display/gigabyte-gf-gtx400_10.html#sect0
     
    Last edited: May 10, 2010
  12. TruMutton_200Hz

    TruMutton_200Hz Ancient Guru

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    It will be fixed with drivers and that's when SLI will rock.

    Also, yes there have been numerous reports of slowdowns from people who tried using a separate card for PhysX alongside their Fermi card(s), so that would indicate it's no longer needed nor advisable with Fermi except maybe if the PhysX card is a GTX295.
     
    Last edited: May 10, 2010
  13. IPlayNaked

    IPlayNaked Banned

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    I don't know. It depends on the game and how the card is loaded.

    For instance, Cryostasis is a horribly optimized game and just runs like poo all the time. On my single GTX 470 I get reasonable FPS and whatnot, but when a physx effect happens, like breaking icicles, I sometimes get stutter. However, I tried my 5770s with my 470 for physx in Cryostasis and while it ran much worse, the physx effects were very fluid.

    Obviously this isn't proof that Fermi cards don't need Physx cards...And I don't have a GTX 480, but Dark Void and Cryostasis have become much smoother for me when I have Physx being processed separately.

    Though I'm sure this is of little relevence to anyone with GTX480 SLI. No way you would need anything to process Physx separately for those cards.
     
  14. TruMutton_200Hz

    TruMutton_200Hz Ancient Guru

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    Get i7 and then tell me that it's fixed.
     
  15. IPlayNaked

    IPlayNaked Banned

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    Wouldn't fix it. If the card is already loaded down rendering a scene and you throw a big Physx effect on top of it, like the icicles in Cryostasis, you're not gonna get the same performance, it's as simple as that.

    Like I said, for 480 SLI, its definitely got enough left over time to handle it. But for single cards that are busy rendering a scene, it can be beneficial, even if its something like a 9800GT paired with a Fermi card.
     

  16. btdvox

    btdvox Master Guru

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    I myself have GTX 480 SLI + GTX 280 for Physx. I dont see why al you guys say itll bring my performance lower. Maybe theres some driver glitch but if you have a powerful GPU for the Physx card shouldnt be an issue. I see better perf in Batman AA and Just Cause 2.

    I hate when people go out of their way to state not to have the best if people want it. If someone wants TRI SLI why talk them out of it?

    I kept my one GTX 280 from my last batch of TRI SLI cards, dont regret it at all. Other than it as a bitch to watercool because of barbs
     
  17. IPlayNaked

    IPlayNaked Banned

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    Not sure how you can see better performance in Just Cause 2 which doesn't use GPU Physx at all.

    I don't like it when people try to talk people into doing something based on placebo.
     
    Last edited: May 12, 2010

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