Is my MotherBoard compatible with PCI-E 2.0 / 2.1?

I have an old MSI K8N Platinum SLI. I have a nVidia GF 6800 GT in there now.

I've been looking at NewEgg and there are some pretty modest cards for < $75. But the best ones are all 2.0 or 2.1 PCI-E. Will they work on an older PCI-Ex16 MB, and will I be sacrificing performance by putting a 2.0 card in my MB?

Would I be better off trying to find a used nVidia GF 8800 GTX? I've found some on eBay but I can't tell if the 8800 was PCI-E 1.0 or 2.0. It seems say both on nVidia's site. Does that mean it was compatible with the (then) newer 2.0 PCI-E but would still work on the older 1.0?
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  1. PCI-E 2.0 is backward compatible with PCI-E 1.0,so you can use a PCI-E 2.0 card on your board.
    And 8800GTX is a PCI-E 1.0 card.

    "PCIe 2.0 cards are also generally backward compatible with PCIe 1.x motherboards, using the available bandwidth of PCI Express 1.1."

    So you should be fine, but could end up with a bottleneck in performance if it saturates your pci slot's bandwidth. Cheers!

    Edit: sorry, for the double response. By time I had gone through wiki Maziar had already posted!
  3. Thanks for the responses, I know I'll have bottlenecks, I'm just trying to breathe a little life into my 6 yr old system one last time!
  4. Some recent games are still good with an old computer, just bump the CPU's speed (freq) a little bit or get more RAM's and happy gaming... :)
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