Does most of the temps inside a PC come from the Power Supply?

[Kunaak]

I was just wondering, cause everytime I have my Case open, you know when needing to clear the Cmos alot cause I am testing a new chip for hours to get the good spots of the overclock....

well the Powersupply seems to be the hottest thing in there.
to touch anyways....

 

[mw521]

The power supply get VERY hot. I have taken out the factory fans and installed higher cfm ones to take care of this, most PS supply fans are low cfm. A dual fan supply is nice, the leftover ambient temp from your cpu is pulled in the bottom and shot out the back as it is usually very close to the cpu.

 

[equalizr]

depends on what kind of PS you have...i have the Enermax with dual fans (Adjustable) and there are many slots for ventilation..so mine gets luke warm even under full load