changing a PCIe 2.0 Graphic Card for a PCIe 3.0 on a P7P55D MB

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vbolduc08

Honorable
Dec 7, 2013
3
0
10,510
Good day,
I built a system back in 2011 and my son would like to upgrade the Graphic card to play newer games. Can I install a GeForce GTX 760 PCIe 3.0X16 on the following system:

P7P55D Motherboard,
Intel core I5 760 2.8 Ghz
8Gb of DDR-1600
Seasonic 750W Gold Power supply

The Graphic card will replace a GeForce GTX 460 PCIe 2.0X16. The motherboard supports the PCIe 2.0 and I see that PCIe 3.0 is reverse compatible on some forum but would I really gain speed (fps) by doing so? Is the mother board going to void any gain I guess is my question? Can someone give me an answer and provide advise on my best way forward.

Kind regards

Vincent
 
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2

2x4b

Honorable
Oct 28, 2013
775
1
11,360
Yes, a PCIe 3 card is backwards compatible (will plug into and work) in a PCIe 2 x16lane. But it will only work (exchange data on the bus) at PCIe 2 speeds.
That said, any newer graphics card will still outperform an older one (the drawing and rendering work), even at the lower bus speed.
Yes, a GTX76 will yield a significant FPS increase over a GTX460 even on PCIe 2.
 
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