i5-4670K Help Needed

[Grieva3]

Hi,

I've just built a new gaming rig with the above CPU, Asus Maximus VII Ranger mobo, 16GB (4x4GB) DDR3 1600Mhz RAM (though the BIOS seems to think it's 1333Mhz) and a Sapphire R9 290 Tri-X 4GB GPU, Corsair Carbide 300r, Noctua NH-D14 cooler, 1200w PSU.

I've OC'd the GPU to the most I'm gona get out of it without any instability (Core Clock upped from 1000Mhz to 1040Mhz, the Memory Clock upped from 1300Mhz to 1350Mhz and the power limit left at stock). Using MSI Afterburner. Any tips on how I can get more out of that are also welcome

My issue is I've only been able to OC the CPU to 4.2Ghz stable, with the voltage set at 1.15v (with Prime95 running the temps sit comfortably at 65c-75c, with Core4 sitting at 45c curiously). I did manage to get 4.6Ghz with a 1.3v, but the second I tried Prime95 the temps shot up to 100c and my system restarted, thankfully no CPU damage. Any higher than 4.2Ghz with 1.15v and the system fails to boot, I get a BSOD when Windows tries to load up.


This is my first time really overclocking a CPU so any tips on what I can do to get a better, stable OC would be awesome


Cheers.

 

[Leonell12]

your bios thinks of the ram as 1333mhz?...have you enabled the XMP profile in the bios?

 

[InvalidError]

Overclocking is an iterative process... increase the clock multiplier until the system fails, increase the core voltage until the system passes or you reach the maximum voltage you are willing to gamble on, rinse and repeat. If you cannot get 4.3GHz@1.15V, try 1.20V unless you are nervous about 1.20V or higher.

 

[Grieva3]

Yep, With all of the DRAM settings to 'Auto' it states I have 16GB of 1333Mhz, with or without XMP enable. It's enabled now and I've set the DRAM Frequency to 1600Mhz.

How high voltage would you suggest? Considering I had such terrible temps at 1.3v.

Thank you for the replies

 

[InvalidError]

1.25V is a common comfort zone for overclocking Intel's 22nm chips.

 

[Grieva3]

1.25V is a common comfort zone for overclocking Intel's 22nm chips.

I ended up using the AI Suite III software, which set the voltage to 1.25V and a stable 4.4Ghz OC. That'll do for me, it runs cool and it's the fastest I'm gona get without going above 1.25V which I'm not willing to risk.