I have a Cooler Master eXtreme Power 650 watt its this one i got at newegg, http://www.newegg.com/Product/Product.aspx?Item=N82E16817171014 it was on sale for 40 bucks so i bought it, but wasn't thinking that i would ever come up to two of these powerful setup, evga 9800 gtx+ sli, so i need to know if i would have enough juice or will i blow my S*#& up, i had one gtx 260 on my system before and it ran ok but i traded it in for two 9800 gtx+, my system spec is: Intel Pentium e2180 OC at 3.2ghz, 2x1 gb Patriot DDR2 800, 2 ide harddrives, 4 antec 120mm adjustable fan one that is led, Antec P180, and my psu above. thank you to whoever can help me with this in advance. i also play at 22in 1680x1050 res if that would help too, and also one more question would this setup make a difference in future proofing my computer i mean it cant future proof forever but yea just wondering if this would be not beneficial to sli or to sli a 9800gtx+, just wanted to know if i did the right hting on trading in my gtx 260 for two 9800 gtx+ for free, oh yea i have read multiple threads about power before and had seen a lot from a guy who does two GTX 260 sli and a quad oc with only a 500watt power supply so im wondering wtf hows that possible im a noob so be nice please.