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Got the new Noctua NH-U12S but it seems like my idle temps seem high.

post #1 of 7
Thread Starter 
I have no OC right now. Just installed the cooler like couple of hours ago, I put like the size of a rice grain of compound on cpu. My idle temps hover around 35-38c. I had before the Noctua NH-U12P before with the same setup and I could swore that my idle temps were like28-32c a couple of years ago. My room temp currently is like around 78-80F that may seem kinda high but still.

Is there a method to test to see if my new heat/sink and is up to snuff ? Should I do some prime testing without OC and see what happens, please give me some parameters.

I did go into the bios to increase the min duty cycle from 20% to 50% the odd thing though it only reduced the temp by maybe 1c I even put duty cycle to 100% and it made no diff in idle temps I know the fan was working I could hear it at 100% for the first time.

The cooler tower is a little smaller than the Noctua NH-U12P but not by much. What you guys think ?
Edited by Subzero11 - 8/2/13 at 12:41pm
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post #2 of 7
Quote:
Originally Posted by Subzero11 View Post

I have no OC right now. Just installed the cooler like couple of hours ago, I put like the size of a rice grain of compound on cpu. My idle temps hover around 35-38c. I had before the Noctua NH-U12P before with the same setup and I could swore that my idle temps were like28-32c a couple of years ago. My room temp currently is like around 78-80F that may seem kinda high but still.

Is there a method to test to see if my new heat/sink and is up to snuff ? Should I do some prime testing without OC and see what happens, please give me some parameters.

I did go into the bios to increase the min duty cycle from 20% to 50% the odd thing though it only reduced the temp by maybe 1c I even put duty cycle to 100% and it made no diff in idle temps I know the fan was working I could hear it at 100% for the first time.

The cooler tower is a little smaller than the Noctua NH-U12P but not by much. What you guys think ?

Idle temps are usually inaccurate until about 40*+. Temps should be measured under load, i would load it up and check the differences
Edited by dmfree88 - 8/2/13 at 8:48pm
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post #3 of 7
Thread Starter 
what would temps would be good though if I prime with no OC ? How do I know I'm getting good cooling.
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post #4 of 7
Quote:
Originally Posted by Subzero11 View Post

what would temps would be good though if I prime with no OC ? How do I know I'm getting good cooling.

Im not 100 percent sure personally never used that cooler or your CPU. But I do know the 2500k safe max temp is around 80-90* so as long as your under that you should be fine. I would try using both coolers though and see what the difference between them is. u12s should be better temps then the u12p, shouldnt be a large difference though.

edit:
I think stock fan stock settings maxes at 72* ish (while gaming) i could be wrong though and this is just based on a few peoples posts. I would hope you should get better then that or close.
Edited by dmfree88 - 8/2/13 at 11:12pm
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FX-8350 GA-990FXA-UD5 MSI 7870 Hawk Edition Gskill 1600 2x4 GB 
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Corsair Force Series 3 22x Samsung w/ lightscribe dvd/cd burner Noctua NH-D14 Win 7 pro x64 
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post #5 of 7
If your room is 6c warmer than what it was at those 28c-32c numbers from years ago, there's nothing off. Looking at my stuff with NH-D14, same idle temps you're seeing, room is 25c at this moment. It was 10c lower when the room was 16c.
post #6 of 7
I would keep the CPU temp below 80c. Tcase is 72.6c which is probably 5-10c lower than core temp. Temps when testing is one thing. Temps when actually working with computer are often but not always lower. For instance when I render graphics my cpu load is as high or higher than when testing because rendering softwares usese all cores at 98-100% for extended lengths of time.


As deepor said your ambient is 25-26c now compared to probably 21-23c before? So that explains 3-5c of temp increase.

And really the important temps are inside of your case, not just what the room is.

You can do them with a cheap indoor/outdoor wired remote or terrarium digital thermometer to monitor air temps. Twist a piece of stiff insulated wire into the last 20cm of sensor lead so you can bend it to position sensor where you want it... like an 3cm in front of your GPU cooler/radiator intake.. to see what the air temp going into CPU / GPU cooler is compared to room temp. The closer it is to room temp the better.. Shouldn't be more 5c maximum, 2-3c is what I usually end up with after 30 minutes full load on both CPU and GPU. Warning: Spoiler! (Click to show)
Processed By eBay with ImageMagick, R1.1.1.M2a

Edited by doyll - 8/6/13 at 5:37am
post #7 of 7
Thread Starter 
BIG UPDATE: I remounted the heat sink. I noticed to I didn't put enough paste the CPU there was a area without. I also used new paste. I used used 2 1/2 old year paste. I think it got old in the tube somehow the stuff was thick. The new stuff also from noctua came out more soft and less thick. My idle temps about 5c lower now.
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CPUMotherboardGraphicsRAM
Intel i5-2500K @4.5GHz ASUS P8P67 (REV 3.0) MSI GeForce GTX 660 G.SKILL Ripjaws 8GB (2 x 4GB) DDR3 1600 
Hard DriveOptical DriveCoolingOS
Seagate 2TB 7200.14 ASUS DRW-24B1ST Noctua NH-U12S Windows 7 Home Premium 64-bit  
MonitorKeyboardPowerCase
BenQ GW2470 Standard black keyboard SeaSonic G Series 550W Fractal Arc Midi R2  
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Logitech 310 Generic black cloth pad Creative Inspire T10 2.0 speakers 
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SSF
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Hard DriveOptical DriveCoolingOS
Seagate 2TB 7200.14 ASUS DRW-24B1ST Noctua NH-U12S Windows 7 Home Premium 64-bit  
MonitorKeyboardPowerCase
BenQ GW2470 Standard black keyboard SeaSonic G Series 550W Fractal Arc Midi R2  
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Logitech 310 Generic black cloth pad Creative Inspire T10 2.0 speakers 
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