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PCI-Express Scaling, redux?

Discussion in 'NVIDIA' started by velocd, Jan 6, 2011.

  1. velocd New Member

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    In reply to the article concerning PCIe bandwidth from Mar 26th, 2010:
    http://www.techpowerup.com/reviews/NVIDIA/GTX_480_PCI-Express_Scaling/

    This article has been the only one I've found searching Google that adequately tests PCIe scaling.

    My question is about GTX 580 SLI. This review concerned a single GTX 480, but as lemonadesoda and Formula350 discussed on its thread, I'm not convinced SLI has the same yields.

    A follow-up article for the GTX 580 under SLI would be awesome. Regardless, what does anyone think the performance difference is between two GTX 580 in SLI @ 8x compared to 16x? I've been looking at P67 motherboards and Gigabyte's UD7 is the only one that does SLI @ 16x.
     
  2. overclocking101

    overclocking101

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    i agree. if you looks 2-10% from X16 to X8 and lets say xfire/sli scales at 70% do the math the difference is more then normal cards with gddr5 at high clocks has insane bandwidth, hopefully pci-e 3.0 is backwards compatible i know at first they thought it wasnt going to be
     
  3. erocker

    erocker Super Moderator Staff Member

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    I'm not so sure that the bottleneck is coming for the PCI-E bus or somewhere else in the chipset.
     
  4. W1zzard

    W1zzard Administrator Staff Member

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    i'm considering revisiting this on p67 with both ati and nvidia cards. not soon, weeks
     
  5. EarthDog

    EarthDog

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    BUMP for modern cards...
     

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