Are PCIe 3.0 graphics cards compatible with PCIe 2.0 motherboards?

Osama Javaid September 24, 2012
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Are PCIe 3.0 x 16 Graphics cards compatible with PCIe 2.0 x 16 motherboard slots? If yes, what are the cons?

  1. James Maciel
    October 6, 2012 at 4:10 pm

    yes but it will only run in pcie 2.0 which means half the bandwidth.

  2. Dave Rimmer
    October 5, 2012 at 6:34 pm

    Is this resolved as the answers given should resolve this matter, you should have no problem what else do you need.

    • Anonymous
      October 6, 2012 at 5:44 am

      yes it is

  3. Gustav Brändström
    September 25, 2012 at 4:22 pm

    Yes. The PCIe is compatible both ways. YOu can use a GPU with 3.0 on a 2.0 MoBo, and you can use a GPU with 2.0 on a MoBo with 3.0. I belive it goes for 1.0 as well.

  4. Antonio Iacobone
    September 24, 2012 at 1:45 pm

    yes, gpus with pci-e 3.0 are backward compatible with pci-e 2.0 slots on motherboards. I'm using a 7850 pci-e 3.0 on a gigabyte ma-790fxt ud5p with "only" 2.0 pci-e with no problem! Maybe you loose only 0,5fps or 1 :)

  5. Antonio Iacobone
    September 24, 2012 at 1:42 pm

    Yes, gpus with PCIe 3.0 will work on motherboards with only PCIe 2.0. You won't see any difference...maybe 0,5-1fps lower...because the bus PCIe 2.0 is not limiting card already

  6. Dimal Chandrasiri
    September 24, 2012 at 1:20 pm

    it'll support bt your won't benefit the full potential of the Graphics card. that will create a bottleneck in your system.

  7. bonioloff
    September 24, 2012 at 7:41 am

    Yes, it must be compatible.. But i never try..

    • MerVzter Balacuit
      September 24, 2012 at 7:46 am

      i havent heard before that there is 3.0 haha good question anyway...

  8. ferdinan Sitohang
    September 24, 2012 at 2:46 am

    From the explanation of PCI it self, it says that PCI 3.0 is "backward compatible with existing PCIe implementations".

  9. Matt Smith
    September 24, 2012 at 2:45 am

    Yes, they are. They won't have access to PCIe 3.0 bandwidth, but I don't think that's an issue with any current video card.

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