2.0 compatible with 3.0 PCI?

I'm buying a GTX 650 as an upgrade to my current Radeon HD 4550, and it requires a PCI Express 3.0 slot. My motherboard is a P5N-E SLI 1.XX and it has 2 x PCIe x16 , Single VGA mode: x16 (Default), SLI mode: x8, x8 ,1 x PCIe x1 , 2 x PCI 2.2

I was wondering if I could use it on my motherboard, and if so, which port would I use? Thanks!
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  1. Yes it will work fine. Currently running a 7950 in 2.0. You might want to look at the 7750 and 7770. Much better price per performance.
  2. Agree.
    The GTX650 does not "require" a PCIe v3.0 slot. It's simply compatible with it as well as being backwards compatible.

    The bandwidth provided by a PCIe v3.0 slot would also not benefit your card so you won't be bottlenecking the card with your motherboard.
  3. lt_dan_zsu said:
    Yes it will work fine. Currently running a 7950 in 2.0. You might want to look at the 7750 and 7770. Much better price per performance.


    I compared the GTX 650 to both of those cards, and the 650 had better performance on both, except for on the 7770 where it had a little bit higher texel rate.
  4. Did you just use hwcompare? That site isn't very good. In actual practice they 7750 matches and 7770 beats it.
    http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-7.html
    http://www.tomshardware.com/reviews/geforce-gtx-660-geforce-gtx-650-benchmark,3297-7.html
    unfortunately the benchmark is a little old, but I think it proves that the 7750 is at least equal to the 650, with driver updates possible better.
  5. 7770 is actually a lot faster than the GTX 650. If you really want nVida cards, you can get the GTX 650 Ti.. Not the 650.
  6. 650ti isn't worth it IMO. Might as well just get a 7850 at that point. Only $20 more for a 1gb version. Or $35 more for a 2gb version.
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