Originally Posted by eXXon
They are designed to do just that, deliver their rated output 24/7 with no problems. That's why we pay a premium on quality PSUs.
We don't have to baby them as much as we think we should. They can handle it.
I've killed too many PSUs to feel that way. To be honest, with literally thousands of builds under my belt, and having a long record of almost all of it all posted online, I haven't killed much in the way of hardware die unless it was PSU-related, or because I was shoving too much current through a chip. I just popped a 1200W PSU on OC a few weeks ago. Lost a couple of SSDs when it went. I have a Silverstone 750W PSU that can push clocks higher than my 850W Corsair TX PSU, easily tested with this high-power rig.
Not all PSUs are rated the same way.
Corsair 860i is rated for 860W on 12V...150W on 3.3/5V...but not 860W+ 150W.
So, it's actual capabilities are less than that 860W, if all you do is compare 12V power draw from CPU and VGAs. You need to actualize 3.3V/5V draw and then calculate what you have left over. This is why I say board/accessories matter.