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Cores WAY hotter than the CPU

post #1 of 11
Thread Starter 
Heya,

so after running prime95 for 40 minutes, i noticed something weird in my i7 920's temps:

CPU : 58 *C
CPU #1 / Core #1 : 74 *C
CPU #1 / Core #2 : 67 *C
CPU #1 / Core #3 : 70 *C
CPU #1 / Core #4 : 67 *C

And this is in the stock frequency, with cooler master v8 fan. Any ideas why there's such a giant difference in core temps?
post #2 of 11
Bad application of TIM.
post #3 of 11
mediocre cooler
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The 775 Legend
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post #4 of 11
Quote:
Originally Posted by E-Peen View Post
Bad application of TIM.
Quote:
Originally Posted by wumpus View Post
mediocre cooler
Its not about that ..
He asked why the big difference between CPU temp and core temp not if his temps are fine (which they aren't btw).

That difference is normal ... its how it works. I don't know the actual reason why its like that but thats how it is.
Usually CPU temp is quite a few C lower that core temp.


scratch that! I was wrong.
Seems like CPU Temp should be higher than Core temp. If its lower, then you should reset your cooler. Since you're temps are that high at stock clocks and your CPU temps is lower than your core temps, you should reset your cooler.
Now that you've mentioned this I might have found something wrong with my temps lol
Edited by Cryptedvick - 6/13/11 at 1:22pm
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post #5 of 11
Pretty sure "cpu" is just a sensor, maybe ambient. Your core 1,2,3,4 is what you should be looking at if you're wondering what temps you're getting for your cpu.

Edit: And your temps are sort of high for stock with an aftermarket cooler. Could be due to the seating of the cooler or thermal paste, as mentioned before. Try re-seating the block, and you want to use a "small pea size drop" for the thermal paste.

Edit #2: What are your temps when idling, including the "CPU" and cores?
Edited by sivarthcaz - 6/13/11 at 1:21pm
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post #6 of 11
cpu temp is the temp of the case of the processor...it's a sensor further from the cores so it's lower usually...the core temp is what you should look at when overclocking
    
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post #7 of 11
Thread Starter 
Okay, so i reapplied the paste and my temps dropped around 10 degrees. Now the #1 core peak temp is 67 degrees, #2 is 61, #3 is 64 and #4 is 60. That is at full load ofc. Now what i ask is whether those temps are fine for 2.9 ghz?
post #8 of 11
For a Core i7 920, yes, those are safe.
post #9 of 11
Thread Starter 
But how much would those temps spike if i overclocked to 4.0? Or 3.5 for a start?
post #10 of 11
CPU Temp is just the temp on the IHS... it will always be lower. use the core temps.

And v8 sucks.
    
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