Overclocking 4790K! Trying to achieve 4.8Ghz

TheNaitsyrk · Apr 22, 2016

Okay, so I wanted to achieve 5.0Ghz for a while now, since temperatures are well within reason I decided to try 5.0Ghz.

4.6Ghz works fine on 1.2V.

On AfterBurner it usually shows 45-50 temps (but when I look into other software it says that 59 was maximum temp).

I'm using H115i. With an extra fan on top.

Never tried to go past 4.7Ghz.

What voltage should I do next for 4.8Ghz?

Thanks in advance.

Ecky · Apr 22, 2016

Many 4790K's will not make 4.8ghz at all. Very, very few will reach 5ghz with any voltage. However, 4.6ghz @ 1.2v is pretty exceptional, but there's absolutely no way anyone on here can tell you what voltage your chip will need, as it's completely unique to each CPU.

What are you using to stress test / check for errors / create load for temperatures? What does Core Temp or Real Temp report for your temperatures?

clonazepam · Apr 22, 2016

I'm just posting for some support. Go for it!

If you somehow manage to boot into the operating system, assuming Windows, at 5+Ghz, you might manage to do quick runs of SuperPI for the giggles, or validate CPU-Z for a snazzy signature, but I'm guessing it won't operate normally.

neblogai · Apr 22, 2016

I'm also posting just for support, but I'd say you should check if you can run 4790K at 4790Mhz

dudmont · Apr 22, 2016

If you can get it, it will be at a very high(for Haswell, anyway) voltage. I seem to recall reading once that with Haswell(I have a 4790k running at 4.5ghz at 1.16v) for every .1ghz you need to add roughly .05 volts. That would put you at 1.4volts. I'm not sure how the refresh affects safe voltage, but I've never heard otherwise on this issue. Give it a go and don't fiddle with the cache. If you can get it stable, save the bios and then find a stable speed at less than 1.3 volts for longevity. I wish you luck

.

TheNaitsyrk · Apr 22, 2016

Ecky :

I'm just using games, been playing for ages and it's stable at 1.2V. Temps well within reason while gaming on 4K res 45-50 temps usually.

Ecky · Apr 22, 2016

My Ivy Bridge CPU needs almost exactly 0.05v for every 100mhz increase, past around 4ghz, and both CPUs are built on the same 22nm process. I needed around 1.3v for 4600mhz, and 1.4v to hit 4800mhz, and could not get 4900mhz stable regardless of how much voltage I pumped into my CPU. Your chip seems to be of higher quality than mine.

Good luck!

TheNaitsyrk · Apr 22, 2016

dudmont :

Well, I just want 4.8Ghz only 0.2 up from what I currently have.

TheNaitsyrk · Apr 22, 2016

Ecky :

To be fair, I'm using turbo mode on all the fans in the case, including CPU fans in Corsair Link and my water cooling radiator is huge 280mm.

Ecky · Apr 22, 2016

1.4v is probably not healthy or safe for that CPU in the long term, but I'm not an Intel engineer, so take what I have to say with a grain of salt. I agree with dudmont that you should stay under 1.3v though.

This is what power consumption and heat production do as you increase voltage and clockspeed:

4.6ghz, on my particular CPU, draws around 3x as much power as 3ghz. Above maybe 4ghz, power consumption goes exponential.

TheNaitsyrk · Apr 22, 2016

Ecky :

To not go past 1.3V is an obvious thing. But will I be able to get 4.8Ghz knowing that 1.2V is enough for 4.6Ghz?

Ecky · Apr 22, 2016

Maybe, maybe not. Only way to find out is to try, but I'm leaning toward "probably not".

Search

Overclocking 4790K! Trying to achieve 4.8Ghz

TheNaitsyrk

Reputable

Ecky

Ecky

Illustrious

clonazepam

Distinguished

neblogai

Distinguished

dudmont

Reputable

TheNaitsyrk

Reputable

Ecky

Illustrious

TheNaitsyrk

Reputable

TheNaitsyrk

Reputable

Ecky

Illustrious

TheNaitsyrk

Reputable

Ecky

Illustrious

TRENDING THREADS

Latest posts

Moderators online

Share this page