Is this normal?

[adam mcleish]

Ive overlocked my i53570k to 4.2ghz with an offset of +0.05. Prime95 showed temps of 60oc max. The voltage was hitting 1.118v.

When I boot up windows, I checked my voltage in CPUZ and hardware monitor pro, and they show me that my voltage is 1.256v with my CPU at full load.
After around 3-5 minutes, it idled at 1.6ghz, with the voltage at 0.992v

My question is - is it normal that it is firing up at 1.256v? I thought, at the most, it would fire up at 1.118v, which is what I was getting in prime95. I know it will fire up on full load at the start, but the voltage thing is confusing me.

 

[adam mcleish]

Also, I keep getting spikes at 1.256V too. Any answer the this as well please?

I appreciate the help. Thanks.

 

[rex4235]

Thats how offsets work. Its not a solid (all the time) Vcore setting. It will add voltage when the CPU needs it, and lower it when it doesnt. Often times, you can control the "aggressiveness" of the offset to increase or decrease the amount it will fluctuate.

 

[adam mcleish]

Thanks for the reply Rex. Any advice on how i can control the aggressiveness? Ideally, I dont want it hitting 1.2v+.

 

[rex4235]

A setting called "Load Line Calibration" is usually the culprit
http://www.masterslair.com/vdroop-and-load-line-calibration-is-vdroop-really-bad

The above link explains it in detail, as well as comments on the situation you are in

 

[adam mcleish]

After disabling the LLC, nothing happened. Did the same thing.
I tried setting the voltage manually to 1.200v to see what happened... It crashed during the start up. Is it safe to say that it needs 1.256v during the startup?
That sounds pretty poor for an OC of 4.2ghz.

 

[rex4235]

You could also run a negative offset. This is what I do for my setup. It will lower the highest seen vcore under load.

As far as OCing and voltage is concerned, nothing is a guarantee. The .056 difference could very well be the difference in stability/ instability for your chip.

 

[adam mcleish]

Ill give -0.05 a go and see what happens. Thanks for your help Rex.

 

[ihog]

Why not set a manual voltage?

 

[adam mcleish]

Id like it to drop when its idling. Maybe its because im new to overclocking, but it just gives me peace of mind.
Ive managed to get it to 4.0 with an offset of -.90. Checking for stability now, but its looking good.

 

[rex4235]

Just remember, your goal is to
1. Get a stable OC
2. Get it with the lowest Vcore

You just have to do alot of trial and error to find that harmony

 

[ihog]

Id like it to drop when its idling. Maybe its because im new to overclocking, but it just gives me peace of mind.
Ive managed to get it to 4.0 with an offset of -.90. Checking for stability now, but its looking good.

I don't know about you, but my manual voltage drops when it goes to idle. All about LLC.