i7 4790k High/Unstable Temps

Release The Krkn

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May 8, 2015
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Specs

  • CPU - i7 4790k (no OC and no XMP)
    MOBO - Asus Z97 Sabertooth Mark I
    RAM - Corsair Vengeance 2x8GB 1600Mhz
    GPU - EVGA 1080 Hybrid

TL;DR - I found somewhere a random Asus BIOS setting that made my temps to go down about 10c and stabilize. I would appreciate help locating that setting again.

I have experienced high idle temps and random temp spikes since I built my rig back in 2014. Originally I had a Corsair h100i, but even now that I've upgraded to a NZXT Kraken x62, I still have this issue. I experience 35c-40c idle temps which I understand are perfectly safe but it spikes randomly when the machine isn't working at all. I'll see it jump from 32c to 50c every other few seconds. While gaming, the temps stayed around 60c but when I stress test the CPU/FPU using AIDA64, it instantly sky-rockets to 90c-100c and eventually it causes a BSOD (I think I have that issue resolved, thankfully). Trust me when I say I have tried blowing out dust, using more/less thermal paste of different types, and remounting hardware 10-12 times

One day, by the grace of God, I managed to find something on the internet where somebody posted regarding this issue and said "Hey, once I turned off "this" setting my temps looked much better". And I found that setting in my BIOS and it worked like a charm. I have since updated/changed BIOS settings and I would REALLY like some help remembering that setting
 

Release The Krkn

Reputable
May 8, 2015
8
0
4,510
*UPDATE*
I think I may have found the setting. It's called "Intel Enhanced Speed Step Technology". Disabling that gives me 30c idle temps with only maybe 5c changes and stress-test temps of only 60c under full CPU/FPU stress. Any other advice/input is also greatly appreciated.