Safe CPU Operating Temp? (Cooling Fan Broken)

Danoumas

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Feb 6, 2009
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Hi everyone - The short version of my problem is that the cooling fan on my laptop (hp dm4-1000) has failed, and I'm trying to figure out a safe temperature range for my Core i5-430M CPU to run at. Thanks for any help!

Feel free to just answer the above, but here is a slightly longer version with some questions/info: I'm curious on any thoughts as to whether I should be worried for the safety of my HDD, or if anyone has experience replacing a laptop cooling fan (I imagine it's tricky, but maybe it isn't?). I'm monitoring my system with CPUID now, and by throttling back my chip to 75% I seem to be able to keep things in the 60C - 90C range. That feels safe (I know the max rating is 105C, which is where my laptop shuts itself off), but I'd like to throttle as little as necessary. My HDD seems to be hovering around 36C-38C most of the time, and I'm not sure how safe that is. This is all with the laptop sitting on an external cooling fan... I imagine it might be near unusable without that, but I haven't tried yet. Again, thanks for any feedback or ideas!
 
Solution
60 is ok of you are doing intensive things. I would be a bit worried if this occurs when you are just surfing the web. 90 is generally though of the danger zone.

dillondeysel23

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Safe operating temperature is below 90 degrees Celsius, preferred temp is obviously lower, your CPU should have a function where by it will just shut down at 95 degrees but don't take any chances running at high temps for long amounts of time is going to cause damage.
 

Danoumas

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Thanks Dillon. The computer does automatically hibernate due to heat when it reaches 105C. Trying to avoid having that happen if I can.

Related question if anybody knows it - is there a way to throttle the CPU at a deeper level than through Windows Power Management? While in use since I have limited the CPU through Windows it never comes close to 105C, but every time I try to wake it from sleep it tells me it had to hibernate due to overheating, and the max temp recorded by CPUID shows 104C. So perhaps somewhere in the waking process it heats up at full load. I'm going to look around in my BIOS when I get a chance.
 

Lord_Sunday123

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Just as a quick recommendation, try looking into one of those laptop lapdesks that sit been your lap and the bottom of your laptop and have fans in them. They could potentially help you dissipate some of the heat.
 

Danoumas

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Thanks Lord Sunday and Velo. I do have it on a lapdesk-sort-of-thing with a fan right now. I'm getting better at carefully keeping my laptop in the 60-80 range, but I think sometime soon I'm going to see if I can replace the fan so that I can use it without limiting its performance as I am now.