High Temperature Concerns

OCC

OCC

OCC

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8 Oct 2012
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Just built my i3770k system (with Coolermaster 212 EVO) on an Asus P8Z77 board.

Now, so far all I have done is run the auto-overclocking functionality available via the Asus software and it has got me up to 4.4Ghz.

During normal usuage the recorded tempearatures are in the 30-40 C range. However, I started to run an AIDA64 Extreme stress test and within 5 minutes one of the cores hit 97 C, with Real Temp reporting a LOG. The other 3 cores didn't appear to get as warm, max of about 90 C.

I am slightly concerned how hot one particular core got after only 5 minutes of stress testing. And when I saw it go so high I killed the stress test immediately.

Am I over-reacting? Any thoughts?
 
Don't use the auto overclocking feature it will usually set the voltages way too aggressively, the core temperature disparities are normal and seem to be especially bad with Ivy Bridge.
 
Last edited:
RJC said:
What cooler are you using?
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I suspect it's the Cooler Master 212 EVO mentioned in the OP ;)

97°c does seem high but you will always get one core that's hotter than the others (so I've been told).

If I were you I'd be tempted to get some new thermal paste and re-seat the cooler as a first step.
 
OCC said:
Just built my i3770k system (with Coolermaster 212 EVO) on an Asus P8Z77 board.

Now, so far all I have done is run the auto-overclocking functionality available via the Asus software and it has got me up to 4.4Ghz.

During normal usuage the recorded tempearatures are in the 30-40 C range. However, I started to run an AIDA64 Extreme stress test and within 5 minutes one of the cores hit 97 C, with Real Temp reporting a LOG. The other 3 cores didn't appear to get as warm, max of about 90 C.

I am slightly concerned how hot one particular core got after only 5 minutes of stress testing. And when I saw it go so high I killed the stress test immediately.

Am I over-reacting? Any thoughts?
Click to expand...

97 degrees that is a lot, if kept at that temp that CPU wont live long at all.... you dont want to keep it above 72... close to 100 degrees is even too much for 6 year old AMD.
 
If it's in Auto for Vcore it'll be giving it something daft like 1.4V.
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I checked and it was giving it round about that.

Re-ran / made some changes and now at 4.2Ghz using only 1.3v max and all cores remaining around 70 C until full prolonged load.

Still slightly concerned that cooler fan never seems to really kick in and wasn't flat even when I was getting temperatures in the 90's. Now, even when core temps are reaching 70 C, the fan is only running at 600 rpm (when it has a max of 1800).

I let Asus Fan Xpert 2 software auto tune it. I guess I should be changing it (in the bios? or other fan controller software?) to be more aggressive when temperatures rise?
 
are you setting a fixed cpu voltage or using cpu voltage offset? offset will be better and maybe high llc level

trickiest part is getting the right level of llc and offset,you have to see how much each adds to your total cpu load voltage something like +0.10v you dont need much

is that cpu fan a 4 pin or 3 pin one? only 4 pin will speed up/slow down according to temp(pwm)
if 3 pin you need to set cpu fan profile to turbo in the bios

im guessing you should only need between 1.1v-1.2v if that for 4.2ghz

lastly you want the best performing cooler you can get your hands on regarding ivy bridge
 
OCC said:
Re-ran / made some changes and now at 4.2Ghz using only 1.3v max and all cores remaining around 70 C until full prolonged load.
Click to expand...

Just as a slight comparison, my cpu (same as yours) is overclocked to 4.4ghz and the vcore is 1.224v max temp when stress testing was around 60-64'c.

Have a go at altering the vcore and speeds some more and you'll find a better temp eventually.

Good luck with it. :)
 
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