I dunno, the thermaltake power supply I put in my wifes computer was very cheaply built, and constantly runs hot (not OMG hot but enough to make you wonder) ... Its not even a year old and I keep expecting it to die any day
on the other hand I have been having really good luck with the ULTRA brand power supplies, I have a 650 watter in mine and a 450 watter in my dad's (and I have been using them in any computer I built within the last few years with none gone dead yet), Mine has not been shut off except for maintenance to the machine or upgrades in 3 years, my dads has not been shut off at all (aside from maybe a power outtage) in 2 solid years
the 131mm fans on those things do ok on cooling them, they are pretty darn quiet (you cant hear mine over the cpu and gpu fans anyway)
on the other hand I have been having really good luck with the ULTRA brand power supplies, I have a 650 watter in mine and a 450 watter in my dad's (and I have been using them in any computer I built within the last few years with none gone dead yet), Mine has not been shut off except for maintenance to the machine or upgrades in 3 years, my dads has not been shut off at all (aside from maybe a power outtage) in 2 solid years
the 131mm fans on those things do ok on cooling them, they are pretty darn quiet (you cant hear mine over the cpu and gpu fans anyway)