Dynamic CPU Overclocking help

[rossk]

Hi guys,

I have an i5 4670K and an ASRock H87 Fatal1ty Performance motherboard. I've got the latest BIOS which now allows 'non Z87' overclocking. Under default non OC settings it runs at 3.4 GHz with vcore 1.074v. When I stress it in AIDA64 it turbo boosts to 3.8GHz with vcore 1.177v. I've run a stable 4.2 GHz OC with vcore set to 1.190v and stress tested it no problems. When it idles it drops to 3.4GHz - which is good (I don't want it to run high 24/7), but the vcore doesn't adjust and remains at 1.190v.

I've tried playing around with options in the BIOS like enabling all the c-states and C1E but whenever I OC, regardless of the OC, the vcore stays constant even when the cpu clocks down when idle.

Is it possible that dynamic voltages/frequencies just don't work when overclocking with this motherboard? Also, are there negative effects to having an idle cpu at a lower clock to be over-volted?

Thanks!

 

[Buzz247]

Im not familiar with that board and new bios - will have to do some checking. But as a quick answer, no it won't hurt anything locking the voltage. You will generate a bit more heat consistently but no harm will come.

Like I said will have to do some checking, but most boards have a dynamic option and can be lock or unlocked. However, using dynamic can force voltage up too so a whole new set of issues can occur. Generally best to leave locked

Edit: another thread using asrok oc haswell

 

[Buzz247]

http://www.tomshardware.com/forum/id-1722630/intel-god-quick-dirty-guide-4ghz-haswell.html

Phone wouldnt cooperate on the above edit to paste this

 

[ihog]

Question:

Why did you get a unlocked processor and a mobo that can't increase the multiplier past the boost multiplier?

 

[Buzz247]

I believe that is the point of thew non-z bios actually