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CPU Running Hot

post #1 of 18
Thread Starter 
I have been slowly overclocking my CPU and I'm at 3.5Ghz with a 1.22 voltage and the CPU is hitting about 85c when stress testing with Linx and around 42c while idle. I have a Hydro Seriesâ„¢ H70 High Performance Dual-Fan Liquid CPU Cooler from corsair and was wondering Could the thermal paste not have been applied correctly so the CPU is running hot for liquid cooling?
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post #2 of 18
What are your ambient temps?
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post #3 of 18
seems like the mount is bad. For 3.5 it should be lower but then again every chip is different.
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post #4 of 18
Thread Starter 
The computer room is between 21-27c idk what the temp in the case is but I have lots of air flow.
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post #5 of 18
Just a couple of things to check before you go to reapply the paste,

Are the fans flowing through >> [] >> not like both in on the rad >> [] << or both pulling out the rad. << [] >>

Is the pump running at full speed, looking for 1400 rpm on h70, speed-fan or bios will tell you.
Edited by andrewmchugh - 6/21/11 at 9:31am
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post #6 of 18
Thread Starter 
I have the case set so the back and top are output airflow, and the front and side are in. I have the pump itself connected to the CPU fan port and the fans connected to the consent power slots. when I get home I'll check the rpm on those.
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post #7 of 18
Quote:
Originally Posted by Ranger1230 View Post
The computer room is between 21-27c idk what the temp in the case is but I have lots of air flow.
At 1.22Vcore is low for the i7-950, you should not have to worry about temps until over 1.30Vcore and that H70 should be good up to 1.375-1.4Vcore.
Max temp for that chip is 100c
Edit: And you should never see 100c with Vcore under 1.4 with that H70
Edited by H969 - 6/21/11 at 9:50am
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post #8 of 18
Maybe try remounting? It is a little warm...
post #9 of 18
Thread Starter 
I was afraid of that since remounting a liquid heat sync is fairly difficult especially since the case doesn't have a hole in the back panel for so I can hold the rear mount up while I screw it in with out pulling out the motherboard. well since the temps aren't too high it can wait till the weekend.

also would the bad mounting job explain why each cpu core has a large variation of temp? like core 1 is 51 while core 2 is 46 and core 3 is 49 and core 4 is 43. I would have expected them to be mach closer together since they are like a centimeter apart.
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post #10 of 18
Quote:
Originally Posted by Ranger1230 View Post
also would the bad mounting job explain why each cpu core has a large variation of temp? like core 1 is 51 while core 2 is 46 and core 3 is 49 and core 4 is 43. I would have expected them to be mach closer together since they are like a centimeter apart.
Were they like that on your previous cooler? Some variation in idle temps is normal as the sensors are geared to work better at load temps. Mine idle 4-5°C apart (lowest to highest) and although 8°C is at the high end of that it is still possible that it is a sensor issue. Do they get closer together under load? If so then no problem, if not then possible mounting issue.

I would check the things that andrewmchugh mentioned earlier, fan orientation and pump RPM. The outside of the fans should look different, so you should be able to see both these faces on the outside of your rad:



If both faces look the same then you need to switch one fan round, as they are both blowing in or sucking out of the rad. For reference the side with the sticker on is the exhaust side.


Some mobo headers limit the voltage based on CPU temperature, although I would hope that they are putting out 12v at 85°C. Check the RPMs, and you may need to change the BIOS settings to ensure that your pump runs at full speed all the time. On ASUS mobos you need to select "disable" on the fan control for the header that your pump is plugged into.


If that all checks out then you are looking at a re-mount. You will need to clean the old TIM off (a shame as it is good stuff) and re-apply new stuff.
Edited by GingerJohn - 6/21/11 at 11:03am
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