Noctua NH-U12P SE1366 + i7 920 temps, anyone?

J

Jawn

New Member
Hi,

I recently bought a Noctua NH-U12P SE1366 heatsink to OC my i7.
I think my Noctua heatsink may be faulty though... upon opening it the top fin was bent/crushed. I rebent into place, but maybe it doesn't work as well.

If anyone has this combo of hardware, please post your temps.

Noctua heatsink @ 2.6GHz
Idle: 36-38c
Prime 95 Small FFTs: 56-58c

Noctua heatsink @ 3.3GHz
Idle: 38-40c
Prime 95 Small FFTs: 73-76c

People with this combo have been reporting 3.6GHz OC's and temps not going over 60c... so I don't know what's going on.

FYI, my room temp is 21c and humidity is 55-60%

Thanks for the input.
 
I may have found the problem to my heat issue. I decided to reapply thermal paste, but instead of just a blob in the center, this time I opted to spread it out evenly with my credit card.

After retesting and seeing the same temps, I decided to take off the heatsink and maybe put a tad more thermal paste... but then I saw....


img0218copy.jpg

img0219copy.jpg


Due to the fact that I evenly spread the thermal paste, I had a clear indication that the heatsink was not making contact on the entire CPU! I clearly think this is the problem...

Is this a faulty heatsink? Notice that the sides that are not making contact are the ones with the brackets. Could the brackets be too high?

Thanks for the input.
 
My temps are:

Overclocked at 3.43Ghz

Idle: 38-40c
Prime95: 56-60c

I don't know what my temps are stock because I've
been overclocked since I built my rig.

Besides the fact that you used way too much paste...
That heatsink does not look flat.

Being a machinist, I would clamp it in a vise and mill it flat. :D

Clean that crap off of there and put a ruler on it and see if it's flat.
 
Thanks for the input. It's the 3rd time I put paste. So far, this method gave me the lowest temps. The blob in the center was 2-3c higher and I didn't use that much.

I did the grain of rice and it was higher temps than this spreaded application.
 
I would definitely check to see if it's flat.

It looks to me like it isn't. Either that or your CPU is
seriously deformed, but I wouldn't think that would
be too likely.
 
I lapped my CPU and my heatsink and my temps changed by like 2-3c.
I'm out of ideas and I'm pissed off I voided my i7 warranty for such weak results.
 
Well not every I7 is the same...its like a B3 vs G0 Q6600. B3 runs 5-6c hotter then a G0. Sadly not many have a I7 here so harder to help you out with the problem.

I would have to imagine that you have a hotter batch then the ones you read about.
 
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I see well then I wouldn't know...since he lapped it he could always try using a tube of Shin Etsu X23-7783D which should drop it another 1-2c over AS5.

bomberboysk is selling some 1 gram tubes pretty cheap here
http://www.computerforum.com/158336-shin-etsu-x23-7783d.html


Only other thing that comes to mind is difference in chips...I see people running 3.6ghz with my S1283 HS with a Q6600 but I am unable to do so with mine.


Also I am curious where are you getting these temps from which program?
 
Did you check for flatness of both the cpu and the heatsink?

I think I would have shaved the heat sink flat before I went
sanding away at my cpu.

Remember, shiny does not mean it's flat...
 
Like Bodaggit23 said, somethings not right there. With that contact patch one or the other is not flat. Lapping one is fine, but you need to find out which has the uneven surface.
 
What thermal paste are you using ? It may not seem like a big difference maker but when i switched from Arctic Silver 5 to IC Diamond 7 my load temps dropped by almost 15 degrees :O
 
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