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Discussion Starter #1
I got an E8400 in the mail on Monday, and installed it that afternoon. I booted into Windows at stock and noticed the idle temps were around 45C, and full load hovered around 57C. I reseated the heatsink three times and used a dot of Arctic Cooling MX-2, and the temps stayed the same all the time.

I put my Q6700 in instead, and lapped the heatsink base - the Q6700 was already lapped. I tried once using a line of Arctic Cooling MX-2 and a second time using a dot of it, but the temps remained very similar: idle temperatures in the high 40's and load temperatures in the high 60's.

I can't think of any reason for these temperature issues. The Q6700 ran with the same heatsink before when lapped at 3.4Ghz with idle temps in the mid-20's and full load temps in the high-40's.

Can anyone help with this?
 

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how is the flatness of your cpu. Place a straight edge perfectly flat to the base. Shine a bright light behind it. You should see the light peaking through any gaps.

Backside of a knife works, razar blade, ruler(metal one)

If you don't see a noticeable gap then i would like to ask what cpu cooler are you using.

Is your case internals messy and obstructive to the airflow?

it doesn't seem like your temps are crazy abnormal. But give us and update once you tried the above steps. You may need to lap if the cpu is really convex/concave.

Or you might have gotten a bad cpu

try using this method of application

http://www.dslreports.com/speak/slid...bC1ncmVhc2U%3D

application method for Arctic Cooling MX-2

http://www.arctic-cooling.com/downlo...mx2_retail.pdf

i hope this helped
 

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Discussion Starter #4
As I said above, I used the Q6700, lapped the exact same way before, and the temps were 10-20c better, in the same case, with the same good airflow, with the same heatsink. The CPU base is just as flat as it was before, and the heatsink base is flat, too.

EDIT: @NoGuru: The temperatures remained almost exactly the same at stock or a medium overclock and slight voltage increase.
 

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Discussion Starter #6
For the TIM application, I used both the application method detailed in the MX-2 documentation, as well as the Enzotech Ultra-X documentation. They both ended up with the same temperatures.
 

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Discussion Starter #8
Both the ambients and case airflow are as good as they were when I had the Q6700 idling at 25c and full load in the high 40's.
 

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Discussion Starter #11
Quote:


Originally Posted by lockdownx1x
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Maybe you got one with Stuck Sensors?

http://www.techpowerup.com/realtemp/

Download that and test it.

Tried that too, with both the E8400 and Q6700, but while the sensors on the E8400 looked stuck, they weren't on the Q6700.

Which would explain the problems with the E8400, but not why they remained problems after I put the Q6700 in.
 

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Discussion Starter #13
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Originally Posted by brettek
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isn't it summer around there? I see my temps going higher in this ambient heat than a few months ago.

But 15 to 20 C in two days, when the outside temperatures haven't changed much at all? That seems a bit improbable, specially since my room is air-conditioned most of the summer and remains about 20C the whole time.
 

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Discussion Starter #15
Quote:


Originally Posted by OSDCrusher
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Use different thermal paste.

Given that it worked before with the good temperatures I posted in the first post, I don't think that's the problem.
 
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