Hmm... I've noticed warmer than usual air coming off my main computer. I mean, the cat even noticed and was sleeping on the top fans... I took a closer look at noticed the power supply (PS) fan isn't spinning. And yes, some fans are suppose to be off under light load, but I tried to ramp it up and the fan is still not coming on. I tried to determine how old the PS is but oddly couldn't find a record of it. I figure it has to be at least 5-10 years old. It still works but it does seem to get warm after extended use - so I'm replacing it. In looking for a new PS I noticed a new classification of 80 WHITE. Which is now BELOW Bronze....in load efficiency... I was happy to find a GOLD PS at under $100... Wow... PS are expensive now. I remember being able to get a good one for under $50... HMPT.