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CPU Overheating Issues

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Last response: in CPUs
February 14, 2012 1:30:24 PM

I recently bought a new PC from a small gaming PC store. I'd originally gotten an AMD FX-4100 processor in it, however after a bunch of problems, they replaced that and the motherboard. Currently the specs are as follows:

AMD FX-8120 - non-OC'd
Radeon HD 6770 - non-OC'd
MSI 760GM-E51 motherboard
4GB RAM
Stock coolers, MS-Tech CA-0300 Raptor NG case (3 fans: http://www.ms-tech.de/eng/index.php/product/detail/pdci...)

The issue for me now is that the CPU is running very hot for games, and about 40-45 idle. I've read that upto 64C is the safe limit on the FX-8120, but certain games are pushing the temps up past 70C easily. Originally they had been going up past 80C, until I went in and put new AS5 paste on there. 2 nights ago though, it got so hot that it shut itself off, so this is at the "real concern" point.

Obviously the PC is just 3 months old and there's absolutely no dust in there. The case is off the floor, on a desk, both sides are uncovered and in a cool location, so that's definitely not it.

I feel like it should be running these games just fine on the stock coolers with no overclocks - hell I've heard of significant FX-8120 overclocks on the stock cooler. It's particularly Star Wars: The Old Republic that's pushing the hell out of it, which is being run on low settings. I've never had a computer that's run this hot before.

Does anyone have any ideas what to do about this or what could be causing it?

More about : cpu overheating issues

February 14, 2012 1:39:19 PM

BigMack70 said:
Your CPU heatsink perhaps isn't attached properly, or the thermal paste was applied incorrectly.

I'd recommend picking up some new thermal paste, removing your CPU heatsink, reapplying thermal paste and resetting the heatsink. Then, you can see if the issue persists.

You could also pick up a nice CPU cooler like the Hyper 212 Evo for ~$35 off newegg, and that will certainly keep your CPU nice and cool once attached :) 


Unfortunately as I said above, I did take off the heatsink and reapply new paste. The result was a drop in temps from 80ish down to 70ish, but that's still pretty high.

I am unsure whether I absolutely need an aftermarket cooler in this system. It's not that I don't want to buy one, it's that I'm concerned there is an underlying issue if it's this hot on stock.
a c 1148 à CPUs
February 14, 2012 4:42:38 PM

It's odd that a fresh install of Arctic 5 Silver didn't solve the problem. Are you removing the old thermal properly? And installing the new AS5 correctly? Below is a link to the AS5 instructions per CPU (each requires a slightly different process). And here is what I use to clean/prep the HSF base and CPU's heat spreader: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
If following the instructions doesn't solve the problem I wonder if the HS's Fan is spinning up to speed? Try turning off any BIOS-controlled fan speed reduction for noise and see if the fan picks up speed and the temps drop.

AS5 Instructions: http://www.arcticsilver.com/amd_application_method.html...
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February 14, 2012 4:49:53 PM

clutchc said:
It's odd that a fresh install of Arctic 5 Silver didn't solve the problem. Are you removing the old thermal properly? And installing the new AS5 correctly? Below is a link to the AS5 instructions per CPU (each requires a slightly different process). And here is what I use to clean/prep the HSF base and CPU's heat spreader: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
If following the instructions doesn't solve the problem I wonder if the HS's Fan is spinning up to speed? Try turning off any BIOS-controlled fan speed reduction for noise and see if the fan picks up speed and the temps drop.

AS5 Instructions: http://www.arcticsilver.com/amd_application_method.html...


Yep, I used the ArtiClean removers to get the paste off thoroughly and prep the surface. That exact pack you linked. And followed the instructions found here: http://benchmarkreviews.com/index.php?option=com_conten...

I'll give a nose around the BIOS and see if there's any fan speed reduction but I'm pretty sure there wasn't when I last looked.

a c 1148 à CPUs
February 14, 2012 5:25:00 PM

Another thought just popped into my head; you mentioned the shop replaced your quad core with an octo core. I wonder if they kept the quad core's HSF instead of installing the (I presume) larger HSF for the 8 core?
February 14, 2012 5:38:30 PM

clutchc said:
Another thought just popped into my head; you mentioned the shop replaced your quad core with an octo core. I wonder if they kept the quad core's HSF instead of installing the (I presume) larger HSF for the 8 core?


Man you might have cracked it. I just Googled photos of both heatsinks, and they've stuck the 4100 heatsink back on. :| I'm not sure what the difference in specs is between the two but that's definitely a problem.

MUCH appreciated for thinking on that one!
a c 156 à CPUs
February 14, 2012 6:02:50 PM

take it back to the shop, now before they start to deny it as being their problem.