Concerned with CPU temps

pkryder

pkryder

pkryder

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14 Jan 2010
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Well I recently splashed out on a i7 overclocked to 4GHz and a corsair h50. I am rather concerned though over what seem to be excessive temperatures under full load the cores will idle away at around 47 degrees but under full load this shoots up to around 80-85. Im not sure where I'm going wrong here as most people seem to report much better results from this cooler. I'm running in what should be a well ventilated coolermaster 690 case with 3 intake and 3 exhaust fans. I've tried mounting the supplied corsair fan as intake and exhaust (it generally spins at about 1600rpm) I've also tried two 1300rpm xsilence fans in push/pull exhaust configuration. Most reviews suggest the latter config but any seems to make no more than a few degrees difference.

This may be a noob question but I know nothing of the mechanics of watercooling but I notice when I move the radiator water sloshes around inside is this normal I would have assumed the circuit would be full?

Any help/suggestions much appreciated.
 
i wouldnt be happy at 85deg, i was getting that in my poor airflow system, with an air cooler @ 4GHz, so something doesnt seem quite right there.
obvs 85 wont do any serious harm to your cpu from what i have read, and depending on who you listen to and their personal opinion you will be told to lower the temps straight away, or that its ok coz its hardly ever on full load.
i personally wouldnt be happy unless it was on low to mid 70s under full load.
never used the H50 so cant comment on whether something is wrong with how you have set it up, but i would have imagined the temps to be a lot lower.
whats you vcore?
 
i have an i5 750 and running prime 95 the only time i hit 90c was because my scythe zipang 2 was not mounted properly as one of the push pins popped out.

Took it all of and put more thermal paste on then reseated and max load temps dont go more than 52c
 
I didn't overclock it myself so dont know all the settings but according to CPUZ my core voltage is 1.34 assuming that is what you are asking for.

It might be OK at these temps and as you say it wouldnt be running at full load all the time, I just had greater expectations from the H50.
 
Someone correct me if this isn't current, but I believe you should be monitoring the tcase temperature rather than the individual cores. Intel state 100 degrees is the max safe operating temperature, which will actually be greater than 110 degrees from the core sensors.

It would be good for you to double check your hsf mounting anyway but if it is all correct then I wouldn't worry about it as you're within the safety levels.
 
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My temps were getting very high when I first installed my i5. It was because I had a fan mounted the wrong way. Try reseating your heatsink and making sure any of your fans aren't the wrong way round
 
Did you use the tim that was on the h50 pkryder.

I cleaned mine off and put some arctic tim on.

My core voltage on my i7 at 4.2 is only 1.280 core voltage.

seems very high core violtage:eek:

oh forgot to add my h50 idles at 39
 
CPU vcore 1.368 bios 1.34 CPUZ 85 under load Overclockers settings.
CPU vcore 1.35 bios 1.312 CPUZ 80 under load
CPU vcore 1.3 bios 1.264 CPUZ 73 under load
CPU vcore 1.25 bios 1.216 CPUZ 67 under load*

OK thanks very much for the feedback so far, based on the coments i tried some experiments as you can see by the results above I have put the bios vcore setting what CPUZ is reporting it as and the max under load temps.

The default voltage the top one was what it came set by from Overclockers and not knowing much about these things I was a little reluctant to change their professional opinion but as you see it's made a considerable difference to temps.

This kinda raises further questions why did they set it that high if it doesn't need to be so high? Just how low can I go? Has changing the vcore changed any other settings config I sould be aware of? CPUZ still reports I'm running at 4GHz so I'm assuming not but will the lower voltage affect anything like performance, stability?
 
pkryder said:
CPU vcore 1.368 bios 1.34 CPUZ 85 under load Overclockers settings.
CPU vcore 1.35 bios 1.312 CPUZ 80 under load
CPU vcore 1.3 bios 1.264 CPUZ 73 under load
CPU vcore 1.25 bios 1.216 CPUZ 67 under load*

OK thanks very much for the feedback so far, based on the coments i tried some experiments as you can see by the results above I have put the bios vcore setting what CPUZ is reporting it as and the max under load temps.

The default voltage the top one was what it came set by from Overclockers and not knowing much about these things I was a little reluctant to change their professional opinion but as you see it's made a considerable difference to temps.

This kinda raises further questions why did they set it that high if it doesn't need to be so high? Just how low can I go? Has changing the vcore changed any other settings config I sould be aware of? CPUZ still reports I'm running at 4GHz so I'm assuming not but will the lower voltage affect anything like performance, stability?
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im guessing they set it that high as they know it will deffinatly be stable as each chip is different, and 99% of the time the cpu will not be under enough load for long enough to do any damage.
as for how low can you go? well that depends, each chip is different, i found my 3.7GHz oc became unstable at around 1.18v. and no, lowering it will not change any other settings.
 
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