Originally Posted by Holysky
so will it kinda slow down and is that with the 4870 1GB and all 5 fans with the p45?
and will like 700-750 watts enough for crossfire with 2 4870 1GB or SLI with gtx+ 1GB
i wouldnt do 500 bro, you will have hick-ups and such, wont run in full potential, for sli man, i would go with a 900 or even 1000, just incase. GTX 260 and 280 take up somewhat of power and i think it would better if you went with an 800-900 for the 4870's. Also make sure the power supply has 2 6 pin connectors on it, otherwise nothing will work.