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Thermalright Ultra 120 Extreme Temperatures? - Page 2

post #11 of 15
Recheck to make sure the surface is flat!
MY 120 and 120 Extreme, as you know have a great machined finish. The problem is each was either slightly convex or concave and require a bit of lapping.
    
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post #12 of 15
Quote:
Originally Posted by Transonic View Post
Might be a mounting issue like this one:
http://www.xtremesystems.org/forums/...d.php?t=146351

Solution discussed here:
http://www.xtremesystems.org/forums/...d.php?t=145499

What voltage are you giving your CPU? Those temps aren't that bad if you're overclocked and have high ambients. Have you thought about lapping the base? My Ultra 120 Extreme gives me great temps given the 30C ambients in my room.
Transonic:

I read those threads before and thought wow, my hs is a little loose. So I reseated a few times using three different stainless washers. 1/16, 1/8 and 3/16 inch thick. I bottomed out the screws each time and didn't see a single c differnce. Now I am running the hs without a washer (no reason for the added stress to the pcb).
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post #13 of 15
Just did the lap job tonight because I was bored and had nothing better to do. Didn't take any pics since I don't have a good camera. I used two sheets of 400, followed by two sheets of 600, and one each of 800 and 1500. Total process from shutdown to powerup was a little over 3 hours, and I'm happy to report it was well worth the time and effort to lap my heatsink (havent touched my E6600 yet).

Temps (pre-lapping):
Idle - 33C
Load - 58C

Temps (post-lapping):
Idle - 27C
Load - 44C

This is all at 3.46GHz, with 1.45vcore (BIOS), showing 1.344v under load in Windows.
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post #14 of 15
Thread Starter 
Quote:
Originally Posted by bh626pro View Post
I would question your idle temps. Are these core or case temps? Either way, they cannot be less than ambient with air cooling. With chilled water, yes.

What are you measuring the temps with?
Those are the core temps. I've used both the BIOS and Core Temp to measure idle, and only Core Temp to measure full load. The ambient temps are at about 26-27C, about five or six degrees Celsius lower than outside, so the idle temps should be accurate.

Quote:
Originally Posted by Sreenath View Post
im at 1.45VCore btw, what VCore you at?
Right now I've set it to 1.41 volts, but I think it's like .03 volts lower actually.

Quote:
Originally Posted by afzsom View Post
Just did the lap job tonight because I was bored and had nothing better to do. Didn't take any pics since I don't have a good camera. I used two sheets of 400, followed by two sheets of 600, and one each of 800 and 1500. Total process from shutdown to powerup was a little over 3 hours, and I'm happy to report it was well worth the time and effort to lap my heatsink (havent touched my E6600 yet).

Temps (pre-lapping):
Idle - 33C
Load - 58C

Temps (post-lapping):
Idle - 27C
Load - 44C

This is all at 3.46GHz, with 1.45vcore (BIOS), showing 1.344v under load in Windows.
Wow. Those are amazing results, especially for not lapping the CPU. If I've got the time sometime soon, I've got to lap both the heatsink and CPU. I didn't realize how horrible these bases could be.

Thanks a bunch for all the help, guys!
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post #15 of 15
Oh, forgot to mention. Those temps are with an ambient of 21C.
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