I checked few reviews and the difference between 8x lane and 16x lane PCI-E is very minimal. like 3%. Frys has sale on XFX 8800GT 512MB Alpha Dog version for $150 AR. If I put it in my Jetway mobo (in my signature) which only has 8x pci-e lane will I loose lots of FPS? I will end up buying a ATX mobo later. But its tempting now. Should I go 3870 instead of 8800GT?