ssimpss :
Yes they are tight. Do they jump around or something?
Good, I wasn't sure what're the acceptable deviations.
Well +12V rail fluctuates from 11.795 to 11.856 V and +3.3V rail fluctuates from 3.248 to 3.264 V if it tells you anything...
CPU core voltage jumps from 1.040V to 1.2/1.3 V sometimes but it could be that common issue with that ASUS M3A78 motherboard model.
Sometimes I hear some cyclic buzzing sonds (even if it's not under heavy load) but it stops after couple of seconds, it can be silent for days. It's Corsair CX500 and it's not too old, maybe a year at most.
I've started checking all that because I get grey stripes freeze in a "World of Tanks" game, also once in "AC III", but it happens very rare, randomly. Tried all solutions with cleaning drivers, workarounds, settings but it didn't work. It seems to be a common issue with some of the new ATI/AMD graphic cards.