High Load Temps with 3570k @ 4.4 ghz and Hyper 212 Evo

abq_lobo · Apr 9, 2015

I am currently running a I5 3570k @ 4.4 ghz and my voltage is maxing out a 1.256. This is the lowest voltage I could use without getting any whea errors. My idle temps are nice and cool but running prime 95 in blend mode I am seeing temps in the high 80's.

I have an Antec 902 case and have tried to reseat the cooler a couple of times using about a grain of rice size amount of themal paste. I am using the supplied coolermaster paste.

While gaming for hours, my CPU cores only get up to the high 50's with maybe 1 core getting up to 61 or so. I know these temps are fine under normal use, but it bothers me that the temps get so high running prime 95 in just blend mode. Also, I notice that the heat pipes are not getting hot and the block at the bottom is barely warm. Does anyone know what might be causing this.

synphul · Apr 9, 2015

I could be wrong but that sounds about right for the 212 evo since it's a budget cooler. Usually suitable for 4.2 to 4.4ghz depending on ambient temps. Better cooling would require a more capable cooler.

doubletake · Apr 9, 2015

This really isn't something you should be worried about. Seems there's no need to tell you since you already know, but of course your temps are higher with a canned benchmark that can artificially stress 100% of your CPU in a way no normal program can; the whole point of these benchmarks is to provide a measurement of worst-case scenario cooling performance.

abq_lobo · Apr 9, 2015

Although everything seems ok under normal use, I guess I was just a little concerned because the heat pipes do not get hot at all even when touching at them at the bottom near the CPU. Is this normal?

doubletake · Apr 9, 2015

It's probably because of the cheap paste that's under the heatspreader, that's the main reason people started de-lidding their i5's/i7's. Intel used to solder the heatspreaders to the die, but since IVB processors, they started using a a relatively low-efficiency paste that isn't very good at transferring heat away from the cores. Personally, I'd be content with that OC and temps as you can't really do any better unless you want to try your hand at de-lidding, which despite being pretty easy to do, voids your warranty, and I know that not everyone's up for that.

nikoli707 · Apr 9, 2015

repost from CompuTronix.... toms forum moderator..

This is from my Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temp...

" ... Core i 2nd, 3rd and 4th Generation CPU's have AVX (Advanced Vector Extension) instruction sets. Recent versions of Prime95 run AVX code on the Floating Point Unit (FPU) math coprocessor, which produces unrealistically high temperatures. The FPU test in the software utility AIDA64 shows the same results.

... Prime95 v26.6 produces temperatures on 3rd and 4th Generation processors more consistent with 2nd Generation, which also have AVX instructions, but do not suffer from thermal extremes due to having a soldered Integrated Heat Spreader and a 35% larger Die. ... "

this probably explains your temp problems. everything looks fine to me though. try 26.6 and run a small fft test and report back. otherwise you could always do a delid to drop about 10c, i would if i owned ivy bridge.

abq_lobo · Apr 10, 2015

I ran Prime 95 small fft test and my cores maxed out at 76, 83, 80, and 79. That seems more in line with my expectations. I will probably pass on doing a delid for now but may try it in the future. Thanks for the help everyone.

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High Load Temps with 3570k @ 4.4 ghz and Hyper 212 Evo

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