I'm using a brand new PSU 2 weeks ago that was functioning on different hardware without a problem.
As for temps, I have 4 case fans and 2 Arctic coolers on the CPUs, but I had a temp monitor open and running before it went down and the last reading had the CPUs between 54c and 70c, EXCEPT for the monitor on the chipset which reported 109c, which seems high and might be my culprit. I've never had to deal with bad cooling on the on-board chipset. Is there even a market for replacement coolers for that? I'm thinking that since I'll be getting the board replaced I should see what the new one runs at.