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GTX 780 Ti in PCIe 2.0 slot

So I will be putting an EVGA GeForce GTX 780 Ti in my new build (work on it has recently stopped and restarted due to a lack of funds), which has a PCIe 3.0 interface (according to the manufacturer's website). But... I will be using an AMD FX-8350 processor, and I can't seem to find any motherboards that have *both* an AM3+ CPU socket and a PCIe 3.0 slot. As a matter of fact, the only motherboards that I can find with PCIe 3.0 have Intel sockets.

My question is, can I get away with putting a GTX 780 Ti in a PCIe 2.0 slot without being severely bottlenecked by bandwith, or do I need to buy a different motherboard (and, thus, an Intel processor).
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  1. Best answer
    Adorician said:
    So I will be putting an EVGA GeForce GTX 780 Ti in my new build (work on it has recently stopped and restarted due to a lack of funds), which has a PCIe 3.0 interface (according to the manufacturer's website). But... I will be using an AMD FX-8350 processor, and I can't seem to find any motherboards that have *both* an AM3+ CPU socket and a PCIe 3.0 slot. As a matter of fact, the only motherboards that I can find with PCIe 3.0 have Intel sockets.

    My question is, can I get away with putting a GTX 780 Ti in a PCIe 2.0 slot without being severely bottlenecked by bandwith, or do I need to buy a different motherboard (and, thus, an Intel processor).


    If your Budget permits it, best to go Intel with the proper bus. Having said that, the performance hit isn't all that much. About 10% or so, if that.
  2. You won't be affected, as long as the 2.0 is x16. I looked up benchmarks for the 780 Ti and it is a 1% difference for GTX 660 and HD 7970 between PCI-e 2.0 and 3.0.

    Interesting to learn though. I was not aware AMD didn't have any PCI-e 3.0 slots. Doesn't really matter with current hardware though.
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