Why does phenom perform better than an intel quad at high resolution in Lost Planet?

[Jakko]

Not as big a role as you would think.... I did AMD at DDR2-667, 800, 1066 and the runs varied by about 5-8 FPS.

The QX9650 actually lost 2 FPS at DDR2-1067

Jack

Thanks for that info, that makes it even stranger.
Basicly the only area in which the phenom had a distinct advantage was the mem BW...

I guess it could it even be the 790FX chipset vs the X48.
But then, they both offer PCIE *16, so that shouldn't matter.