I looked at the picture, and I think I see what you're talking about on the lower left. It looks like a 4 pin connector? I guess you have to remove the little black cover to get the full 6 pin connector? My current power supply has a 24 pin connector and another 4 pin connector that both go to the motherboard. Is that a definite no go?
Mike, why do you say the memory is overrated for the motherboard? This is what the motherboard says it will support: DDR3 2000(O.C.)//1600/1333/1066 (unless I'm missing something, which is possible).
Thought I edited that before I posted (edited now) it is a 4 pin plug on the MB. Unless your gaming heavily 1066 or 1333 is fine for the memory speed.