I'm planning to get a E8400 Intel processor and a nVidia GTX 260 video card. Now I'm trying to determine which motherboard to get. I've been thinking of picking up a ASUS P5N-D but I keep hearing good things about the P45 chipset. I may want to get another GTX 260 in the future and use them in SLI. Do I have to stick with a nVidia chipset like the 750i or 780i to do this?