4770k requires 1.45 Volts @4.5GHz?

Cheeky_Chris · Jan 5, 2014

Hi,
This is my first time overclocking, I have a i7 4770K, an Asus Sabertooth Z87 and a Corsair H100i. I managed to get my 4770k up to 4.5 GHz at 1.45 V and it was still a little unstable. So I looked up what some other people are getting and they only have to use 1.3 V to get 4.5 GHz! I have to use 1.3 to get 4.3 GHz! My temps are fine 25-30 when idle, 50-70 when gaming. Am I just one of the unlucky ones that got a crap CPU for overclocking?

airplanegeek · Jan 5, 2014

Not necessarily. Did you change the cache/ring bus voltage? because that could be causing your instability. I also found that if i up my VRIN by .1-.2 i could lower my Vcore a lot

Cheeky_Chris · Jan 5, 2014

airplanegeek :

No I did not. It is set to auto. Will changing it manually cause any difference?

airplanegeek · Jan 5, 2014

if you up ring bus you could get rid of instability at lower Vcore

hadji1959 · Jan 6, 2014

Hi Cheeky-Chris,most probably your chip is a 4.3 Ghz chip.Check your stock vid,i.e put everything back to stock values(load defaults,or clear bios) and see what is the Vcore.If its above 1.025-to 1.035 do not expect nothing more than 4.3 to maximum 4.4GHZ(unlikely to succeed this).If your stock vid is less than 1.025 then expect 4.5 Ghz at around 1.24-1.27 volts vocre.If its less than 1.01 expect 4.6-4.8 or more at voltages below 1.3v.
Please see http://www.tomshardware.co.uk/answers/id-1964885/4770k-vcore-increase.html

PintLasher · Jan 16, 2014

Cheeky_Chris :

You should drop down to 1.2 or 1.25.... 1.45 is chip meltingly high. Leave your system at 100mhz and just put your multiplier at 45...

I get 4.5ghz at 1.2v on Air cooling. Temps never get higher than 79C after 2 hours of prime95.

Be careful.

With a vcore of 1.45 you should be able to get 5 ghz easily maybe even 5.2 or 5.5

Dazrihs · Mar 21, 2014

Hey guys, i also have a i7-4770k. My default vcore voltage is at 1.072v. I guess that means that I wont be able to overclock much? Is there something I can do to get my CPU hier that 4.3 GHz ?

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4770k requires 1.45 Volts @4.5GHz?

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