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i5 4670k Temp Questions and Potential of OC

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  • CPUs
  • Intel i5
  • Corsair
Last response: in CPUs
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October 12, 2014 7:21:31 PM

So I have been sitting on my 4670k stock for awhile now (3.4GHz/1.2v). I installed a Corsair H100i and finally have time to tinker and begin the OC process with this CPU. Before I start I wanted to make sure that my temps are ok, because they seem generally high. My idle temps at desktop are around 40c. While playing games (SWTOR, Wildstar) I seem to be around 55% load and ~55C. I tried a basic Prime95 test and under 100% load I was hitting high 90's and even touched 100C. Granted I only ran the test for about 10 minutes, the temps seemed too high for me to want to run it longer. Right now I have a Corsair 500r case with two front intake fans, 1 back exhaust, 2 top exhaust on my H100i, one Side 200mm intake fan, power supply faced down, and two R9 280x cards in crossfire.

So again, before I OC are these normal, safe temps? or should I consider doing a clean of my system, a reapply of thermal paste and retest? I'm really new to overclocking so maybe this is may be a dumb question.

More about : 4670k temp questions potential

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October 12, 2014 7:32:38 PM

Something is wrong with those temps.

Stock clocks you shouldn't be hitting above 70C (best guess) with that cooler.

Could be your monitoring software is giving bad results and it could be poor thermal connection between CPU and H100i
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October 12, 2014 7:39:06 PM

My i5-2500K OC'd to 4.4GHz with a coolermaster hyper 212+ stays in the high 60's after a few min of stress testing with OCCT.
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October 12, 2014 7:47:19 PM

menetlaus said:
Something is wrong with those temps.

Stock clocks you shouldn't be hitting above 70C (best guess) with that cooler.

Could be your monitoring software is giving bad results and it could be poor thermal connection between CPU and H100i


I was using corsair link, cupid hwmonitor and RealTemp and they all showed the same temps. So my guess would be the included thermal paste was bad or I just failed at installing it. Any recommendations on thermal paste ?
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October 12, 2014 8:05:42 PM

Buffalufacus said:
I was using corsair link, cupid hwmonitor and RealTemp and they all showed the same temps. So my guess would be the included thermal paste was bad or I just failed at installing it. Any recommendations on thermal paste ?


Recommendations - If you think there isn't enough thermal compound on the CPU before installing the waterblock - then you have too much there. If the fit is good between the CPU and waterblock it really doesn't take much.

There are lots of reviews and guides available for thermal compound.

I'd recommend you stay away from the ceramic stuff. Arctic MX-2 through MX-5 or arctic silver 5 are couple ones that stick out in my head as decent performance/$ and not too bad for a novice.


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October 12, 2014 8:20:35 PM

I think I might just order some Arctic MX-4 and clean/reapply the thermal paste to the CPU/H100i and see if there's any difference under 100% load. Right now with my case open i'm idle at 32C, but even wide open my 100% was in the high 90's. I guess this is a wait and see game now.
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October 12, 2014 8:57:50 PM

Now would be a good time to do some reading on guides for applying thermal compound.
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less than a minute ago

I was just doing that actually ..... seems like the majority like the rice size method and let it spread by itself
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