Cpu overheating idle 37-44; stress 110-120*c

[dredrox]

hello there, i have this problem with overheating for like 2 years already, then month ago i were touching components in my pc case while stressing PC and got hit by back fan blade, i got scared and accidentally slapped my cooler master tx3 evo, temps instantly decreased from 120*c to 60*c and never again gone higher than that until today. Today when i woke up i heard cooler fan noise like there is wire touching fan blades so i open up pc case to check, i fixed it but when i turned on pc, temps are back on same 40*c idle 120*c stress 125*c shutdown... Could anyone tell whats the problem and why back then hitting cooler decreased cpu temperature?

Note: Cooler is not dirty, other parts are not dirty, new thermal compound, applied like 20 times always same result, Cpu is not overclocked, Cpu is AMD Athlon 64 X2 4800+.
Thanks in advance.

[Accessless]

Hi, and welcome to the forums.

There could be any number of reasons why knocking your cooler would cause instant cooling results but it's probably best to cover all bases:

- Thermal paste/grease.  You say that you have re-applied thermal paste several times so scratch this one. [Note only a pea sized amount is needed, clean off old paste before applying new]

- Heat sink contact with CPU. AMD CPU's are fairly idiot proof, make sure the clips are in and pull the lever down. [Cooler should sit firmly in place]

- Faulty thermal sensor on mother board. Not a lot that you can do about this one but it can be evidenced by high temperatures on cold start up (Boot immediately into BIOS and check temperatures, they should be a little over ambient room temperatures. [Note this is assuming correct functionality of CPU cooler]

- CPU Fan Fault. Does the BIOS report reasonable CPU fan speeds? [800 - 2,800 RPM (PWM) ± 10% or 800 - 2,200 RPM (PWM) ± 10% (EU Version)] Given the odd noises which you have reported I would suspect this to be the culprit.

I hope this helps.


It's a shame it's not a liquid cooling system. This would have been a much shorter reply: Air lock, shake it about a bit.

[dredrox]

 Thermal paste/grease- tried all amounts from a lot to very little all have same result, spent more money for thermal paste then cpu is worth..
 Heat sink contact with CPU- well i had stock cooler when this started(u just cant mount that cooler incorrectly) i thought its bad cooler so i bought hyper tx3 evo which gives same result...
 Faulty thermal sensor on mother board -well i don't know from cold start if i remember correctly it was 35*c while it was 23-26*c in room
 CPU Fan Fault- i have eu version 1800 rmp idle 2400 rmp load, it does spin fast noise is from running out of oil i think, but doesn't affect performance..