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I have an amd 2000+ asus a7s333 mobo .. 3 case fans (2 intake 1 exaust) 1 cpu with heatsink and fan , all of them are working properly

yesturday i was working on a webpage and then my computer shutoff automaticly, cpu was @ 170F (i noticed that the power supply was exausting alot of heat)

i opened the computer and clean every parts with a F#$% Q-tip (inside the power supply, fans etc) I left the power supply on all night (using the green and grey wire.the power supply was not connected to anything) this morning the power supply was working properly and did not produce any heat.

after cleaning the cpu and heatsink I added thermal grease and plugged everything back into the computer. push the on button..after 60 seconds my cpu was already @ 55C

i checked the cpu fan (air was cold) checked the power supply fan (air was hot) theres a fan in the power supply that pushes the air into my computer directly on the cpu. could the sensors read the air from the power supply and give me false reading? is it normal for a powersupply to produce that much heat?

my computer is @ least 4-5 years old.. what should I do?! please help !

Hello and welcome to techspot!

55c idle is a little toasty, but may not critical for your CPU. What core is it? Is it the T-bred? If so, the max critical temp for that particular CPU is 90c.

But to a different issue, are you SURE you PSU is blowing are INTO your case? It should be blowing air OUT.

Actually, I just did a bit more research and it looks like even if yours is the thorton core, your max critical temp is STILL 90c.

Now, you don't want to get anywhere NEAR to that temp, but still 55c idle isn't too bad. What are your load temps?

Yeah 55c is a bit toasty. Generally anything near or above 60c is not recommended. Best solution is to buy a aftermarket cooler.