Yesterday i read a post in this forum, from a guy, he didnt really know what to expect from a 4670k and a "regular" air cooler
So i thought i might give it a go>
Setup
M7G
4670K (not a cherry)
Mem at 2133mhz
Offset OC 4200mhz
Cache clock> auto/41
TIM = MX-4
Cooler EKL Matterhorn push/pull
No Die mount or other fancy HW mods
All overclocking done in bios, and with the mobo sitting on a box-->
😉
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After IBT was complete the max temp showed about65c in Aisuit, but my experience tells me that +75c would be more correct, which pretty much is the end station, for a fully stable OC.. To push it higher = instability, and if more voltage are added in attempt to improve stability, even more heat are generated, and instability will follow / hamster wheel deluxe

So what did i get, without nuking my chip with heat and voltage?
A 4670K at a stable 4200mhz offset..
One tips> I know its fun to run the cache clock fast, but by lowering it to 41, instead of 42, you reduced heat = stability gained.. at the expense of a minor drop in performance..
4770k is a warmer chip, but if you got a 4670K 4200mhz should be possible, without any issues with a good air cooler.
I know there are dudes in here, running much faster with air coolers and Haswell, but i wanted to share this as a ordinary setup test, and what to expect..
4200mhz offset profile now saved in bios.. 24/7 use
Cheers, good luck
Premium >
additional test same OC profile, with CPU spread spectrum disabled this time >

Optional Torture>
Aisuit showed a max cpu temp of 65c, i had another app running alongside measuring the temp peaks, and it showed 80c peaks.. Polling stuff
So if your 4670K "only" reach 4200mhz with a air cooler, be happy for what you got..