i was looking p35 mobos, and looking at gigabyte's top of the line model, it only supported sli with one card running 16x and the other at 4x. is there a mobo with p35 that will run both cards at 16x or should i stick with 680i?
P35 supports 1 16x and 1 4x crossfire, not sli. X38 will support 2 16x crossfire. sli is nVidia crossfire is ATI. If you want sli you will have to get a 650i or 680i nVidia chipset board.
I'm not sure now, but I think I read they'll do that through software. Performance might not be that good if that's true. Benchmarks would really help here.
OP: X38 has been promised for late August, in case you want to wait and see.