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Temp difference between cores...

post #1 of 13
Thread Starter 
Just installed the Noctua C14 for my SB i7 2600K setup, the system runs a lot cooler but the temp difference betweent the cores it quite a bit..
with around 5% load on each core, one core is 31c, 33c,36c, and 38c. Do u guys think I should reapply the TIM and cooler?
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post #2 of 13
No, as that sounds more like an uneven IHS that is really concave.
    
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post #3 of 13
You can try a remount but KROGOTH is probably right, the IHS or the bottom of the heatsink is not level and even.
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post #4 of 13
that's normal.

EDIT: that's actually pretty good, I have a 9c difference between my lowest to highes core.
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post #5 of 13
I get very similar numbers with coolest being core 1 and hottest being core 4. The top of my chip was not flat at all, but I dont plan on grinding it flat like my old q6600. That thing was 35-35-35-35 all core idle, but only after grinding it flat.
post #6 of 13
Quote:
Originally Posted by munaim1 View Post
that's normal.

EDIT: that's actually pretty good, I have a 9c difference between my lowest to highes core.
i will have to agree with Munaim1 on that it does look good and normal

under load my 2500k has a coldest core of about 60-61 and hottest at 67-69
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post #7 of 13
Quote:
Originally Posted by MR KROGOTH View Post
No, as that sounds more like an uneven IHS that is really concave.
This ^

my warmest is 30 and lowest is 27 , so roughly 3c difference ... Core 0 should be the warmest .

definatly not 8c apart though , yes reapply TIM and remount heatsink ..
    
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post #8 of 13
Thread Starter 
My coolest one is Core 0 and hottest one is Core 3.
The lowest recorded temp for Core 0 is 29c and 36c for Core 3.
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post #9 of 13
yep , should remount your heatsink . Try different methods of applying the thermal paste .. Its all trial and error , keep trying until you get the perfect seating .

your cpu could be concave , or the base of your heatsink .. its not making 100% contact , theres air pockets .. these airpockets dont absorb the heat .

How are u applying the compound ? 1 thin line is all u need .
    
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post #10 of 13
It's pretty normal to have a ~7C difference between cores on heatsinks/processors that aren't lapped.

There are a few gems out there that will see <5C, but it's seems rare now or i've just been unlucky. Last 3 processors/heatsinks i've installed had about a 5-7C difference.

You can improve it by lapping the processor and heatsink, but it'll void warranty on them. To me it's not worth it. Even with those temps you'll be able to OC it far past what is actually needed. If you check benchmarks, theres pretty much 0 improvement in games after 3.5GHz or so on single GPU setups, and about 4GHz on dual-gpu setups. (GTA IV not included)
Edited by Murlocke - 5/18/11 at 4:26pm
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