with real cold will scaling at core, I think similar as Godavari, so coldbug around -80C and clocks close to 6 GHz. But there will be limitation BCLK (with 845 Athlon)
newlife: I got issue with BCLK over 114 If I remember right (for SUperpi runs). Temps were OK, I hold the CPU around -40C. But CPU can get higher because BLCK :-/(at air I got similar clock, so the temps were not problem)
Skylake is really more fan than Haswell for me, BLCK tuning, uncore, strong IMC...
And thats not all. I believe, the Zen AMD could be fun also - no coldbug, solid performance, as in phenom II days
There is one trick with AMD overdrive for disabling of APM master
keep the turbocorte in BIOS at auto
Open AOD
open there "turbo core control"
unmark the "turbo"
No, I mean another APM Look at my video How to get FX-8370 5 GHz
look at 1:44, there is "APM master mode" Default is at "auto" and it means, this function hold the average TDP (in some time area) at 125W (or 95W for FX-6300)
6700K is less sensitive than Haswell for voltage at air/AIO cooling. For validation is no problem 1.55V. For benchmarks (Cinebenchs, wprime, Geekbench) its possible cool it with 1.5V If you have budget cooler as example Gelid, your limit will be around 1.45V for benchmarks.
For 24/7 up to 1.45V with highend aircooler or solid AIO. With mainstream cooler up to 1.35V for 24/7. AVX stress is really hot