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Different temp on each cores

post #1 of 10
Thread Starter 
So i was doing prime95 and realtemp is showing 73,63,70,65 on each core. Is there a way to normalize them instead of having one core alot hotter than the other?
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post #2 of 10
It's normal to have all cores at different temperatures. Though, your 10* spread between your first 2 cores is a bit high. You can try re-seating your cooler and re-applying your TIM.
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post #3 of 10
Very normal. Usually not 10 degrees different though...
Try remounting the cooler...
Edited by Triangle - 8/5/11 at 5:11pm
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post #4 of 10
Depends on the source of the discrepancy.

There are a few reason why the temps could be different:

1. Inaccurate temp sensors (nothing you can do about this).

2. Bad IHS to core solder interface (re-flowing the solder can help, but this is very risky if you do not know exactly what you are doing).

3. Uneven IHS and/or cooler base (lapping can fix this).

4. Bad mount or thermal compound application (replacing TIM and remounting might help).

The sensors being a few C off is completely normal, but 10C is uncommon. I'd try remounting the block and if that doesn't help, either lap the CPU if you are feeling adventuresome, or ignore it.
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post #5 of 10
Normal mine is the same way and its lapped and on a water block.
If it is bad solder contact has anyone ever re-flowed a cpu?
Edited by rancor - 8/5/11 at 5:19pm
post #6 of 10
Thread Starter 
Ill re-seat the H50 when i got some spare time, but yea that doesn't sound right. I know 4 cores can't be exactly the same but the numbers that i got is a bit weird.
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post #7 of 10
Reseated mine 3 times and the one core stay 7-10c cooler then the same core that had the highest temp. Really nothing change each time.
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post #8 of 10
it is not necessary that all core temp. should be same, sometimes there may be more load on some cores due to some single threaded app. so you should not worry but if the temp. difference is too high you should reapply the heatsink paste and reseat the cooler
    
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post #9 of 10
Thread Starter 
Reseated and used Shin Etsu instead of AS5 and temp when 2-3 lower than before. The cores are about 69/65/67/62 now
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post #10 of 10
The hottest to the coldest core usually has 5~10c difference and that's normal for SB.
Some good chip has it 2~3c difference, though.
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