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Will a PCIe 3.0 x16 card work in a PCIe 2.0 x16 slot?

  • Graphics Cards
  • Performance
  • Motherboards
  • Graphics
Last response: in Graphics Cards
April 6, 2012 6:12:33 AM

Well I think I want to get a new graphics card, and I was wondering if a PCIe 3.0 x16 card will work in my PCIe 2.0 x16 motherboard slot. What will the performance drop be?

I think that an HD7870 is what I may get.

More about : pcie x16 card work pcie x16 slot

April 6, 2012 6:14:40 AM

It should work just fine and there should be no performance drop at all. Even the new cards these days don't use PCIe 2.0 x16 to its highest capacity.
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April 6, 2012 6:22:59 AM

Yes, they will work. PCIe 3.0 is just like USB 3.0 was. It's just a marketing thing to say "We have something new", but you really won't see any real world benefits other than being able to say you have a PCIe 3.0 card.
April 13, 2012 12:00:25 AM

Best answer selected by reconrey.