Ok, I have some more rumors regarding PSUs...
Gigabyte ATX 2.3 620W PFC/ACTIVE SUPERB GE-E620A-C3 vs Corsair CX600 ATX2.3 80+ 600W (hopefully this is final choice, no more jumping back and forth).
Here it is said that Gigabyte is preffered by AMD regarding Cool'n'Quiet support though I was...