A little doubt about cpu voltages on a core i5 4690k

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GarouD

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Nov 14, 2015
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Greetings, I have been playing around with my first build, I still don't understand all about overclocking, and I have a doubt.

When idle, mi cpu is always at 0.705 vcore and under load goes up to 1.181 vcore, my question is: it's "normal" that mi cpu is always working when idle at 0.7vcore? I have seen videos about overclocking and I noticed that when idle the cpu goes to 0.1vcore for the guy that made the video, did I screw something? or it's normal?

Thanks in advance and excuse my spanish

Specs:
Asus z97 deluxe
Core i5 4690k oc at 4.1ghz
Cooler master V8 GTS
 
Solution
synphul
Your voltages are perfectly normal and the reason for the difference in .7v to 1.18v vcore is intel's speedstep technology. When the cpu isn't under load it drops the multiplier from x38/x39 (x100mhz base clock is the max turbo of 3.9ghz) down to x8. That means when it's not under load the cpu drops down to 800mhz and when it does the core voltage drops to .7v .

I've never seen an i5 drop to .1v at idle. Sleep state maybe? You didn't touch any setting that had it idling at .7v, that's stock from the factory and would be normal if you reset the bios to stock/factory settings. If you're unsure of overclocking I'd suggest reading some guides and getting a better understanding before switching settings around at random. The difference in...
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That is perfectly fine. Due to what us techies call the Silicon Lottery, the nature of each individual CPU is different, even if they're the same brand/model and were produced in the same batch.

The silicon lottery states that silicon is imperfect, and therefore each item produced with silicon in it will be imperfect in its own unique way.

This means that not all 4690k CPUs will have the same VID (the voltage they run at from factory).

As long as you are not overheating, there is no problem here.
 
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Your voltages change because of the "C" state. The CPU will slow itself down if it is just sitting there doing nothing. Unless you have disabled the "C" states in the bios, then it shouldn't slow itself down while idle, which is a waste of power.
 
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Exactly, I was wondering why my minimum voltage was 0.7v while the other guy was around 0.1v, I think I made a mistake when overclocking because I loaded the default settings and tried again, now I have a stable oc of 4.3ghz at 1.22v and with idles of 0.1v.

I wonder what setting did I touch before to make mi minimum voltage at 0.7v, I was just wasting power right?
 
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Your voltages are perfectly normal and the reason for the difference in .7v to 1.18v vcore is intel's speedstep technology. When the cpu isn't under load it drops the multiplier from x38/x39 (x100mhz base clock is the max turbo of 3.9ghz) down to x8. That means when it's not under load the cpu drops down to 800mhz and when it does the core voltage drops to .7v .

I've never seen an i5 drop to .1v at idle. Sleep state maybe? You didn't touch any setting that had it idling at .7v, that's stock from the factory and would be normal if you reset the bios to stock/factory settings. If you're unsure of overclocking I'd suggest reading some guides and getting a better understanding before switching settings around at random. The difference in power between .7v and .1v is probably so little savings that it's lost when you add a case fan. Not to mention the minute you start using the pc the cpu multiplier and voltage are going to increase anyway.
 
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Solution


I read a little bit about overclocking before starting, I didn't want to melt my cpu on the first try but clearly it wasn't enough, I was using the Al suite 3 to measure the voltage, when using HWMonitor the idle is still 0.7v like you said, while in the Al suite 3 reads 0.1v

Thank you so much!
 
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Better to start off small and work your way up than to jump into the deep end with too much in terms of voltage and settings changes. You're usually better off making bios changes manually vs using the included overclock utilities or presets that come with the motherboard. They aim for maximum success and stability and often times over do it on vcore.

You can be stable at a given oc at 1.26v and possibly at 1.21 or 1.22 for the same oc. The extra will just result in more heat which is where setting overclocks by hand through stability testing and small adjustments pays off.

This isn't the only guide out there but a fairly complete one that should help you get started.
http://www.overclock.net/t/1411077/haswell-overclocking-guide-with-statistics
 
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