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PCIe 3.0 -> PCIe x16

My brother acquired a computer from his friend. It isn't a very good one, but he says he will get a new graphics card and see where it goes. Before he buys his card, I want to ask.

Will PCIe 3.0 be backwards compatible to PCIe x16? I would really hate for him to get a PCIe 3.0 card and not be able to use it with his PCIe x16
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  1. PCI Express 3.0 Base specification revision 3.0 was made available in November 2010, after multiple delays. In August 2007, PCI-SIG announced that PCI Express 3.0 would carry a bit rate of 8 gigatransfers per second, and that it would be backwards compatible with existing PCIe implementations.

    http://en.wikipedia.org/wiki/PCI_Express
  2. Best answer
    Maybe, maybe not. There have been a few reported issues of motherboards with PCI-e 1.0 and 1.1 slots not working with PCI-e 2.1 cards. Whether this issue may exist for PCI-e 3.0 cards is not clear yet.

    Chances are it will work since it is supposed to be backwards compatible.
  3. Okay thanks, I will tell him.
  4. Best answer selected by RockNRollz.
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