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My quick review of 5870+GTS250 physx on PciEx 1.0 4x !!

Discussion in 'AMD / ATI' started by finndrummer, May 23, 2010.

  1. finndrummer

    finndrummer New Member

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    My i5-750 is overclocked to 3.6, GPU stock clocks. the only physx game that i have was Batman Arkham Asylum.

    5870+Physx OFF 1600x900

    [​IMG]

    5870+GTS 250 Physx HIGH

    [​IMG]

    Fluidmark

    [​IMG]

    As you notice, the second port is providing good power to the physx card altought it's a 1.0 4x port.
  2. Mussels

    Mussels Moderprator Staff Member

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    4x is enough for almost all video cards, w1zzard proved that with his 5870 and GTX 480 testing.

    That said, you proved a long standing point of mine with regards to PhysX... slows everything down for very little visual gain.
  3. finndrummer

    finndrummer New Member

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    i think he proved this on 2.0 ports, mine is 1.0 4x that's equivalent to 2.0 2x and from his results that impact will be between 20-25 %
  4. Mussels

    Mussels Moderprator Staff Member

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    yeah... for a high end card. GTS 250 is less powerful than a 5870, so that 20% is greatly reduced... i'd say down to almost nothing.

    This isnt to say your testing is worthless or whatever, i'm just saying its agreeing with the trends.
  5. finndrummer

    finndrummer New Member

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    i have see you defending this fact for a long time, i think with 4870 CF :)
  6. Mussels

    Mussels Moderprator Staff Member

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    yup.

    16x/4x on PCI-E 1.1 was only 12% slower than on 16x/16x 2.0 when i tested it. I may well have been CPU limited as well at the time, but the point still stands that 4x 1.0 aint a huge hit - especially not from single GPU cards.
  7. ToTTenTranz

    ToTTenTranz New Member

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    I've seen somewhere that even a PCI-E 1.0 1x is enough for any GPU to do PhysX.
  8. erocker

    erocker Super Moderator Staff Member

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    Realistically a single core of my CPU should be enough to do physics. Nvidia is brilliant with marketing and well, I'm just not going to get into it.

    I will say that the Rocket Sled demo for the GTX4XX series is impressive in terms of physics.
  9. bebbee New Member

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    how u made the physix work with ati card as the primary card and use nvidia card as secondary?
    can you explain?

    because i wil upgrade to a 5830 or 5850 in the future and want to use my old GTS 250 as a phyisx card.
  10. finndrummer

    finndrummer New Member

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  11. bebbee New Member

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    finndrummer: i want to upgrade my OC gts 250. should i buy the ati 5830? how is it performing with new drivers now?
  12. finndrummer

    finndrummer New Member

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    your resolution ?
  13. brandonwh64

    brandonwh64 Addicted to Bacon and StarCrunches!!!

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    I need to update my thread and see if theres a new physx patch
    Crunching for Team TPU

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