Guys i don't post here too much so forgive me if this has been answered in the past. I have a Mach 2 GT (r507) with 2 7800GTX in SLi , DFI NF4 DR mobo, Koolance Exos 2 (still not hooked up to the graphic cards yet), AMD Athlon 64 4800+, 5 hard-drives and 3 optical drives and a couple of CC...