I'm not up to date with new components but i need a PSU for new intel quad core(possibly Q6600) with future possibilty of going SLI w/ 8800 GTS 640MB, i currently have a 680 Thermaltake PSU, is it gonna be enough for 2 8800GTS 640 and the Q6600 or Q9300, i don't know which motherboard it's gonna be.