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1156 motherboard, PCIe x16 and PCIe x8 with SLI

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ramana

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Sep 17, 2009
The 1156 motherboards all have PCIe x16 slots of which one is running at x16, one at x8, and one at x4. If you do SLI with say two GTX 275's, each card will be running at x8. Is there any noticable difference in performance between videocards running at x16 vs x8?

Also, say instead of two GTX 275's you had just one GTX 295. Would both GPU's on the GTX 295 be running at x16 since the GTX 295 is sitting in the PCIe x16 slot running at x16? Or does the GTX 295's dual GPU's drop to x8 and x8 respectively?

Am I making any sense? I guess I am just wondering if it is better to go with two GTX 275's in SLI or one GTX 295 on a 1156 motherboard.


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Nope. Not at all.

However with GTX295 x2 or an HD4870x2 x2 you would notice the difference.

One GTX295 is what I would do. Why do you need that horsepwer? You rocking a 24-30" monitor with a res of 1920x1080 or above?
 
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