I'll be using an Asus P6 58D Premium with a Gulftown 6 core. Between Corsair Dominator (1600) and Dominator GT (1866) which would be the better choice? I read somewhere that the 12G GT set doesn't support Intel XMP. That's what's weighing against the faster ram in my mind. But other posts say that the GT ram does support XMP. I'm doing multicam HD with 4-6 streams. Would the difference in speed provide a significant benefit?