2700K with Asrock Z68 Fatality - help needed

[Blackwhite]

Hi guys,
I'm having problem with OCing my CPU.
Don't get me wrong, I can overclock it a bit up to 4.8 GHz but after 2h of Prime95 crashing.
My settings:
Vcore - ofset +0.005v (1.376v)
Advanced Turbo disable
PLL enabled
Intel Speed step tech enabled
Turbo Boost:
-short duration 220
-long duration 180
Additional Turbo voltage - auto
Speed spectrum disabled
LLC level 2
DRAM volt auto
PLL Voltage 1.709v

C1E - enabled
C3 disabled
C6 disabled
Package C states disabled

What I'm doing wrong?

Temps are 60/71/67/62

 

[Bluntwrapped]

I would try running a manual OC of 48x @ 1.376v. Did you have this stable without using offset mode?

 

[Blackwhite]

no it was not stable - BSOD after 2 hrs.
I don't want to use fixed vcore any way , as it will stay high in idle even when CPU frequency will go down.

 

[Bluntwrapped]

Yeah but it will allow you to find stability more easily, once it's stable switch back to offset mode and tweak the offset voltage until you get your stable voltage under load. It does seem rather odd that it's taking more than 1.376 to get 4.8 stable though

 

[Blackwhite]

Anyway what max safe temps for CPU?

 

[Bluntwrapped]

Around 70 mate. For long term usage anyway. Gives you something to aim for. They do run hot. Mine peaks @ 71 with 1.36v

 

[Blackwhite]

Mine is quite cool too but one Core has always higher temp and sometimes under Prime reaching 76 C.Rest of them are below 70 C

 

[Blackwhite]

Ok I have manage this:


10h Prime95 stable.

 

[Bluntwrapped]

Try running IBT 5 times on max with 8 threads mate and see what you get

 

[Blackwhite]

Looking good


I will push a bit further tonight and see what happen.

 

[Blackwhite]

Are installed built in graphics card drivers and Virtu enabled can affect OC?
Or do the CPU need more juice when OCed?