PCIe bottleneck in trifire?

[pfunkmort]

I'm in the process of building a new computer and got a sweet deal on a 2500k/p8p67 pro bundle from microcenter.

My intention was to sli 570s, but after doing a little reading (I'm neurotic, don't judge me) I found that a slightly more attractive option was to run a 6870 x2 and a normal 6870 in trifire (price and performance upgrade).

My question is about what affects running an x2 card, or trifire for that matter, has on pcie lane usage in a board like a p8p67 pro. I know that running two cards cuts the lanes from x16 to x8, but I can't find information about what a trifire setup like this would do.

Any information or comments welcome, thank you for your time.

 

[amuffin]

I think the p8p67 has the 3rd one that runs at x4

 

[pfunkmort]

no, with this setup, I'd only be using the two pcie x16 slots, as one of the cards is a x2 gpu card. my issue was about what kind of lane usage that would be. thank you for the answer though

 

[amuffin]

OH does the board support triple sli? Also x16 and x8 have 1% difference in performance.

 

[pfunkmort]

it advertises supporting tri and quad sli/xfire (using x2 gpu cards), but I wasn't sure how using an x2 gpu card affected the pcie lane use, and then, by extension, three gpus all vying for bandwidth.

 

[pfunkmort]

Best answer selected by pfunkmort.

 

[Mousemonkey]

This topic has been closed by Mousemonkey