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Recommended vcore on a 4690k?

post #1 of 9
Thread Starter 
Hey all, I've been overclocking my 4690k for a while. Though as I've upgraded other components such as RAM or my cooling, I tend to make slight adjustments to everything.

Recently I acquired an AIO cooler which keeps my max temps from exceeding 65C under my typical real-world usage. Currently, I have a 4.5 GHz overclock with my RAM running at 1866, but in order to keep that stable I have my vcore at 1.3. Previously to that I found I could get away 4.4 GHz with a 1.250 vcore, but only if my RAM was 1600. Raising cache speed and voltage to the same as my cores seemed to cause stability issues as well, so I've left cache alone.

My question is, does anyone know if 1.3 vcore is as high as I should push this CPU? Should I maybe just try to push it to 4.6 GHz with the same 1.3V? What would you recommend for a max temp?

Thanks for your help.
post #2 of 9
Up to 1.4V is okay. Keep your maximum CPU temperature under 85C during CPU stress testing.

You should try to push for more until you reach either too close to 85C or the CPU voltage is too high like getting close to 1.4V for the higher overclock. You can't tell what your best overclock is until you try it smile.gif
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post #3 of 9
You're sweet up to 1.35V id say personally. If you are on air make sure you have a beefy cooler and keep gaming temps at a max of 65C.
post #4 of 9
Thread Starter 
Thanks for the replies. I'm going to push the clock up to 4.6 and see how it does. If I have instability, I'll try 1.35. I've heard 1.4 is the safe limit, but I don't want to push my luck, particularly because my AIO is lower end as far as water cooling goes.
post #5 of 9
Thread Starter 
I tried 4.6 and it barely loaded Windows before I got a BSOD. I don't think I completely lost the silicon lottery but I didn't win it either. I was wondering does anyone know of any settings in the Asus Z97 UEFI that might be making my CPU less stable? Pretty much everything is on auto or default currently except multiplier, vcore and my RAM XMP profile.
post #6 of 9
Probably VRIN (Eventual / Input voltage): 1.7-1.95v adjust accordingly.

If fine tuned well can lead to stability at lower cpu voltages.
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post #7 of 9
Thread Starter 
I tried setting VRIN to 2V. It made into Windows but crashed with a load. Any suggestions on what I can try from here? I'd like to get see if I could get 4.6 GHz without going over 1.3 vcore.
post #8 of 9
Quote:
Originally Posted by adamjp View Post

Thanks for the replies. I'm going to push the clock up to 4.6 and see how it does. If I have instability, I'll try 1.35. I've heard 1.4 is the safe limit, but I don't want to push my luck, particularly because my AIO is lower end as far as water cooling goes.

From my own testing, changing the VCore doesn't seem to affect the output heat of a processor. I haven't tested this with Haswell where the voltage control stuff is on the processor but generally with overclocking the extra heat output comes from increasing the clock speed.
post #9 of 9
Thread Starter 
Because (like you said) the voltage regulation is in the haswell chip I've heard that temps are indeed linked more to voltage than clock speed.
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