10 degree differance between the two cores? normal?

[frankienyc123]

Is it normal to have almost a 10degree differance between the two cores? Its a socket 939 4200x2 @ 2.5ghz cooled with an Arctic Cooling Freezer64 pro.

ambient air temp 25c

Idle:
core 0 = 29c
core 1 = 38

100% load:
core 0 = 52
core 1 = 51

Im pretty happy with the temps except core 1's idle tempature which is pretty high IMO. What do you guys think? What would cause that core to run so much hotter?
thanks

 

[graysky]

Could be uneven contact on your HS due to either uneven mounting or an uneven IHS on your CPU/base of the HS itself. Could also be that one of your sensors isn't symmetrically located under the core. I wouldn't worry about it.

If it bothers you, consider lapping the HS and CPU. Doing so should minimize any irregularities to the surfaces as well as lower your overall temps.

Here is a link to my experience lapping my Ultra-120 Extreme. Here is a link to my experiences lapping the IHS on my q6600.

 

[Mondoman]

Since they're pretty close under load, I wouldn't worry about it. Maybe one core was doing more processing than the other when you took the "idle" reading?

 

[croc]

What does your BIOS say?

 

[frankienyc123]

Well I removed the IHS from my cpu and reinstalled everything. Started up the pc and my temps under load have decreased significantly, but theres still a 5-7 degree differance between the two cores. I guess I shouldnt worry to much since even under full load the hotter core doesnt even hit 50c now with the IHS removed and its pretty hot today ambient air temp is about 30.5c. It will probably drop another degree or two when the AS5 settles in for a few days. Thanks for the advice guys.

 

[graysky]

...if you removed the IHS, and your HS is lapped, it could be that one of the sensors is slightly off center or not correctly calibrated. I wouldn't worry about it. Did you take any pics of the before/after btw?

 

[frankienyc123]

i have a few pics of the removed IHS,how do I go about posting a pic on here?

 

[graysky]

Just upload it to an image hosting site like http://www.imageshack.us/

then use the img and /img code (wrap them in brackets)