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I was using the Windows 7 32-bit from last year, but switched to the 64-bit about 4 months ago. Since then I have noticed my CPU temp. is on rise. It was working fine, but as the start of summer season, It goes to 70*C in just about 20-30 mins. I have shutdown setting in my BIOS for max temp. 70*C.

I have changed and replaced my CPU fan and heatsink, but problem still exists.

What is the max temp for AMD Phenom II and can any suggest what I can do to resolve this heating issue?


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This question may get closed in its current format, I've made a change and I hope to keep it open. If you don't like my change, you can roll it back. – Dave Apr 8 '13 at 7:47
Your computer overheating has nothing to do with your migration to a 64-bit operating system. Sounds like you should look at the typical reasons a computer overheats ( dust, old thermal paste ). – Ramhound Apr 8 '13 at 12:12
Thanks Dave Rook, I really need to solve this problem, I am unable to operate my system form last couple of weeks. – Unknown Apr 8 '13 at 18:07
How imp. is thermal paste, I think its almost dried up. – Unknown Apr 8 '13 at 18:08
@All, I found the actual reason for this, It was due to dried up Thermal paste. I added new Thermal paste and Replaced the Heat sink and All seems fine from then. Thanks for your help. – Unknown Sep 23 '15 at 11:38

Make sure it is not a hardware error - may be your cooler went loose or its thermal grease dried up. Such things always tend to happen after OS reinstall and then you scratch your head a lot. If this doesn't help, check if may be you have switched off all powersaving features in BIOS. If you do, CPU would heat as if constantly under 100% load.

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You probably shouldn't allow much higher temperatures. 70 is max according to AMD, for what it's worth.

I doubt that 64-bit windows is to blame. Even if windows made your CPU run at full load constantly, it still shouldn't go past the thermal limit.

Make sure that:

  • The heatsink is attached properly.
  • You are using a (decent) amount of thermal grease. The size of a grain of rice usually works well.
  • The fan is spinning freely.
  • You have decent airflow in the case. Try running without the side panel for a while to see if airflow is an issue.
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How imp. is thermal paste, I think its almost dried up. – Unknown Apr 8 '13 at 18:10
It's fairly important, but there's no need to be fancy. – user214003 Apr 8 '13 at 21:27

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