Folding on your GPU - Does PCI-E Speed matter?

[Big.Wayne]

Does anyone know if PCI-E speed effects production rate?

I am thinking that it doesn't due to most of the crunching takes place locally on the graphics card without a lot of data travelling up and down the PCI-E lanes?

I'm considering adding a second card (non primary) for folding and the motherboard I am using defaults to PCI-E 2.0 x8 on both slots . . . . I am aware this doesn't impact gaming performance too much so along that train of thought it seems reasonable too assume it will make no noticeable different to PPD

Any feedback appreciated

 

[Big.Wayne]

K thanks all for replies, I guess even at PCI-E 2.0 x4 there is enough bandwidth to keep the GPU crunching, at least on nVidia cards but not so sure about ATI as they do seem to use a lot of CPU?

Anyway got the answers I was hoping for so thanks again!