While I monitor the the motherboard & CPU temp in BIOS, it takes 10 min for my CPU to go from 52°F to 204°F and my motherboard to go to 82°F. I assumed my original Intel 775 heatsink was not adequate so I bought the best of the best to cool my CPU. According to www.anandtech.com, the best coolers for my CPU which I bought are: (1) Thermalright Ultra-120 Extreme heatsink, (2) Scythe Flex SFF21F (1600 rpm) 3-pin fan. I spread the thermal paste on top of my CPU and at the bottom of the heatsink. I then plugged the 3-pin fan into the CPU fan connector on the MOBO. Because the MOBO has a 4 pin header and the fourth pin is for the PWM (Pulse-Width Modulation), I left the 4th pin open and set the BIOS setting for fan mode to DC (the other mode is PWM) Here are my specs: ASUS P5GDC-V deluxe MOBO, Intel 775 3GHZ processor, 1 GB RAM. I have the latest BIOS update 1011. I swapped the CPU with a new CPU & it still happens. I even tried Artic silver thermal paste. What the heck is going on?
Update:I am going to try the answer which said that I may have too much paste. I will try it with one small blob in the middle.
Update 3:I am definitely sure that I am not overclocking. The MOBO has that feature, and I have never used it.
Update 5:When I took the cpu out of the mobo, all of the pins were bent down. This caused the overheating.
Answers & Comments
Verified answer
are you sure you not over clocking? apart from buying some very large cooling fans. but that some serious heat the mobo taking. Interim measures take the covers off to disipate the heat until you find the problem, If you have take the cpu out of the mobo check that all the pins are straight and not shorting out.
It sounds to me like you have too much thermal paste, while a little will fill gaps and help conduct heat too much will actually insulate the processor and prevent adequate heat flow.
The proper amount is one very small blob on the middle of the CPU and that's it. Don't spread it around, don't add any to the heatsink, just put the heatsink on and it will squish the thermal paste to a uniform thickness all around the processor.
Use a cloth and alcohol to clean all of the thermal paste off both the heatsink and processor then reapply, but remember, you don't want NO thermal paste, but you don't want a lot either.
Moderation.
You've got the best overclocking heat pipe cooler in town. I'm envious.
I bet it is just not mounted properly. Check this out, you might have missed something:
http://www.overclockersonline.net/?page=articles&n...
http://www.xbitlabs.com/articles/coolers/display/t...
It would be good not to tighten one screw at a time, just halfway through for better alignment then complete the tightening process.
Use Speedfan monitoring software. It could chart the readings over time.
http://www.almico.com/speedfan.php
Take the heatsink off make sure it doesn't have too much or too little thermal compound - I recommend using artic silver.
Are your fans working?
Is your motherboard being fried by too much voltage?
Try lowering your CPU clock.
are you sure you locked the heatsink to the chip correctly?
that's the first thing i would check
Turn your computer off, take it outside, blow it out with a leaf blower. Seriously. There's probably a big dust build up.