Overclocking i7 4790K with Hyper 212?

[brofromcro]

So I overclocked my i7 4790k to 4.4 GHz without changing voltage and my temps are fine.
After 5 minutes of AIDA64 stress test my cpu temp was 40ºC and my cpu cores were about 60-70 ºC but as soon as I turned of the stress it instatnly droped to 40ºC so I think I could overclock it a little bit more. So what voltage should work for about 4.6 GHz?? Thanks!!

 

[wicked_sticky]

1.2v is a good starting point, but your tempts shouldnt be that low, download cpuz and watch your clock speed while your stress testing. (try Intel burn test for you overclock, it does do a better job of stressing your system than aida 64)

 

[Karadjgne]

Every cpu is different and rescts/requires different voltages. You could take 2x 4790k under identical conditions and at 4.4 one will require 1.14v, the other 1.208v. On a pure cpu stress, pretty much temps won't change much until voltage at speed does. The 4790k already turbos to 4.4GHz on 2 cores, only dropping to 4.2GHz at 4 core usage. So realistically, that's not much of an OC to run all 4 cores at 4.4GHz. Intel has a really bad habit of overvoltage at default clocks, so your temps are not surprising.

That said, be careful when going higher. The cm hyper212 is a 180w cooler and that cpu is generally quite capable of over 200w OC's. The issue is that even though it's a very slow wattage curve up to stock speeds, once you broach that limit, wattage will start rising extremely fast. Quite easy to get over 200w by the time you reach 4.6GHz. If you can even reach 4.6GHz,that all speculation after stock speeds, no guarantees whatsoever. Silicon Lottery.

For Intel cpu's, Haswell up, the best tools to use are prime95 v26.6 (not the newer versions) and real temp, which was written to work with p95. Use small fft test. This gives a constant load. Aida64 and IETU and IBT have variable loads, so won't give accurate baseline temps at speed. Apart from the other stuff like bumping LLC to medium or high, all the disables like C-states etc, I'd start with a 1.25v at 4.4, see where that gets you, then raise the multiplier up 1 to 4.5 and possibly to 4.6 (doubtful). Don't worry about temps as such, see if you can reach your goal speed first. Then lower voltage to lower temps. Baby Steps.

 

[brofromcro]

I overclocked it to 4.5 Ghz and 1.250 voltage and everything runs fine my temps are around 72-81 C at 100% utalization (IntelBurnTest) and 61 C at 95% of utalization idk how or why but everything runs fine thanks guys

 

[Karadjgne]

Welcome to the club

 

[brofromcro]

Feels good hahaah so I pushed it a bit more to 4.7 Ghz but i cranked up the voltage to 1.280 and again everything runs fine and i can feel my pc runing faster cause my fl studio is rendering sutff in like less than a minute plus all these benchmark programs are showing me i did a good thing for my cpu hahahha