Quote Originally Posted by Bellisimo View Post

i don't, i have a E8400, but i don't have 3*GTX280 so i wouldnt be able to test it
That's ok, I already have... I already know the answer... and yes you did imply that 500 Mhz was the delta:
crank your fsb upto 500 and you will have better results for the core2
this is just because of the qpi link, and few people use 3-way sli, even SLI isnt used a lot
Which is, as Savantu states, BS.