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i5 4670k upper voltage

baz2963

baz2963

baz2963

Associate
Joined
10 Jun 2011
Posts
168
Hi,

Managed to get a 4.4 stable(ish) voltage on the i5 at 1.257, however when I run prime95 it goes to 1.324 ?!

It only goes to 1.324 when running Prime95, any CPU intensive game never goes above 1.257. Why is this please ?

Thanks
 
Prime puts more stress on the CPU by loading all four cores so your board is compensating by adding more voltage. 1.32v is fine as long as your cooling is good and temps are acceptable.
 
Have you got your voltage on auto?

Often boards will supply much greater voltage than is needed to get the CPU stable, on an auto voltage. This happens more at load and i wouldn't recommend keeping it on auto if you are overclocking.
 
That is normal if you are using auto or adaptive.
The biggest increase in vcore demands from the CPU comes when AVX code is used.
You are probably using a recent version of P95 which is AVX enabled.

Adaptive is worse the vcore shoots for the moon when the CPU runs AVX code.

This is by design, Intel specification is dynamic vcore increasing with clock speed and load.
With an extra dose of vcore if AVX code is run.

If you want a constant voltage you need to go manual.
Be aware though that you will have to set the voltage high enough to be stable under heavy load meaning too much voltage when under light load.
 
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