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Will 7970GHZ PCI-E3.0 card have a negative performance on a PCI-E2.0 mobo?

I'm looking at buying the following card:-http://www.overclockers.co.uk/showproduct.php?prodid=GX-108-GI

However it's optimised for PCI-E3.0, BUT, it can't possibly saturate a PCI-E2.0 interface as in my mobo so will my mobo really hold it back?
By the way my specs are Mobo BioStar X58, Corei7-920 oc @3.6ghz, OCZ Reaper 12GbDDR3 1440Mhz, Corsair 1000W PSU,

So my question is will my BioStar X58 mobo PCI-E2.0 hold this card back?

Thanks.
7 answers Last reply Best Answer
More about 7970ghz pci card negative performance pci mobo
  1. Nope, you're all good. I haven't seen benchmarks for a while, but last a saw a PCIe 2 interface, even at x8, had no impact even on top end cards (then GTX 580s). With a full 16 lanes you'll be absolutely fine.
  2. Best answer
    I'm pretty sure it wouldn't.

    I have a XFX 7950 (stock clocks) and have benchmarked in the two slots in my motherboard (Asus P8Z77-V LX) - the first a PCIE3.0x16 slot and the second a PCIE2.0x4 slot 3dmark06 and 3dmark11 and the scores are pretty similar - subjectively I didn't notice a difference in frame rates in BF3 and the original crysis. I see no reason why the 7970 shouldnt perform similarly to the 7950 results I have seen.

    3dmark06 PCIE3.0x16 = 29097
    3dmark06 PCIE2.0x4 = 26268

    3dmark11 PCIE3.0x16 = 7385
    3dmark11 PCIE2.0x4 = 7509*

    *The increase between PCIE2.0x4 and PCIE3x16 is weird - the graphics score is 7950 at PCIE3.0, 145 greater than at PCIE2.0, but the physics score is 1000 lower at PCIE2.1.
  3. you shouldn't see any performance degradation with gaming of pcie 2 even thought the card supports pcie 3, pcie 3 only tends to help performance for compute intense work rather than gaming.
  4. The effect will be very slight.
  5. Many thanks for your responses. I'll go and buy this card in the next 3 weeks! At.
  6. Kkkk1 said:
    Many thanks for your responses. I'll go and buy this card in the next 3 weeks! At.


    hi
    did you buy gpu?
    and if you did.did you feel any problems with pcie2 ?
  7. kratosrazor said:
    Kkkk1 said:
    Many thanks for your responses. I'll go and buy this card in the next 3 weeks! At.


    hi
    did you buy gpu?
    and if you did.did you feel any problems with pcie2 ?


    Nope not at all. It ROCKS!!!!!
    Crysis 3 it will play maxed at 1080p with slight framerate issues on only VERY HEAVY fighting sequences but even then perfectly playable.
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