2500k and P8Z68-V - offset questions

astar0

astar0

astar0

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1 Apr 2010
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The VID on mine at 4.4ghz is 1.3611 but CPU-Z only shows 1.304 volts being used. This is only stable for 2 hours of Prime95 then core 2 fails.

In the bios I currently have CPU Voltage on AUTO and Offset + on AUTO. How do I up the volts to try get this completely stable? I tried setting Offset to 0.05 which in CPU-Z looked like it had added .05 volts but it crashed instantly when starting Prime95.

What am I doing wrong? And why is the VID different to the cpu volts on CPU-Z?

Any help would be greatly appreciated.
 
I'm still relatively new to all this my self, but I've gained a little understanding on offset with asus boards as of late. VID is what voltage your chip is being fed, while vcore in cpuz is what voltage is being used (I think?).

Your better off to set your own manual offset, as auto-offset will give the chip more volts than it needs to become stable. What I would recommend to start with, set the offset to manual, and set it to -0.005 (or -0.000) and load test it, it should pass, then slowly reduce it until it fails, then increase back up to last stable.

Have you changed any of the phase/LLC/duty/CPU Compat. settings in the bios?

Edit: Hi leeroy :p
 
Thanks for replies.

I havent changed anything other than muitlipier to 44 and disabled PLL overvolt (some guides say to disable this and others dont).

My chip fails after 2 hours of prime so shouldnt i provide more volts rather than less?

Should I be changing the phase/LCC/duty and CPU compat also?
 
Try this:
Phase - Extreme
Duty - Extreme
LLC - U High
CPU Compat - 120% (kills vdroop?)

PLL should be (according to clucks guide) disabled at 4.5 and below, then enabled above.

By setting the manual offset to 0.000 or -0.005 it will be pretty much running at the VID voltage, if its stable here you can start to minus voltage, if its not stable you know you need to add voltage.
 
Changed all those options and set it - 0.005 offset. Its now stable at 4.4ghz. Current voltage is 1.344v and reaching a max temp of 72.

I will try lowering the offset one notch at a time to find out what volts it actually needs and to reduce the temp a little.

Thanks for your help.
 
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