SLI GTX 680 Configurations

[Guest]

Hello, I was wondering if there was any point in buying another GTX 680 because my motherboard only supports SLI in x8/x8 or a single card at x16
PCIe 3.0
Does this mean that the same amount of bandwidth is going through thus making the 2ndcard less powerful that normal?

Thanks

 

[Nuclear101]

Using SLI in x8/x8 does not decrease performance, even though the bandwith is slightly slower. You will generally not notice it unless you run a benchmark test, and your performance will increase due to two GPU's running in SLI, thus splitting up the task for rendering faster.

 

[cookybiscuit]

All/most motherboards cut the PCIe bandwidth down to 8x/8x. Capacity isn't an issue unless its saturated, PCIe 3.0 8x is capable of handling way more than a 680.