Hi, just wondering if someone can help me on this. I have now a 5870, i'm pulling 450MH/s from it on BAMT with a 550w PSU. I'll maybe had another one, i'll have to upgrade the PSU. In those online calculators, i used this one
http://extreme.outervision.com/PSUEngine, it says a minimum 568w and recommended 618w.
It assumes that all my components will be at 90% load. The cards are but the cpu is almost idle all the time. Can someone give me a hint on a good PSU, or what are your experience with similar setup??
I didn't want to invest a lot on hardware right now since the ASIC's are announced and the reward halving, the difficulty rising etc... but with only 450MH/s i'm struggling to have some return that i can actually be proud.