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voltage - offset or hard set

post #1 of 4
Thread Starter 
Hello, I´ve got 2500K CPU + P8P67 PRO motherboard and I cannot decide, when I overclock, if I should set voltage manually or if I should let offset option enabled to let system itself manage the voltage.

What do you think? If I would let offset enabled, OC would seems unbelievably easy to me... Man just change ratio of all cores to demanded frequency and everything else would take care about itself! Do I miss something? Is there any hitch?
And what about you, do you use hard set voltage or offset? :-)

Thank you for your replies!


PS: I tested both in Prime95. It was stable only on hard set 1.345 V (max temp 56°C; running 22h:30min) // now it runs more than 10 hours (and keep continuing) on offset mode (most of time 1.32 V, however max temp is 63°C).
post #2 of 4
What other settings are you adjusting and what clock speeds are you running.

I have a terrible 2500K 1.2v gets me 4GHx stable. 1.35v needed for 4.5 (In truth 1.3V is prime/IBT stable but superpi crashes with out more power).

1.5v needed for 5+

I use manual and depending on your BIOS version I would stick with it.
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post #3 of 4
Thread Starter 
I run 4.5 GHz, but most of time automatic power management reduce it to 1.6 GHz. Well, 1.345 V was enough for Prime95 to system be stable. BUT most of time CPU runs on 1.6 GHz anyway, so I think, that such overpowering 1.345 ~ 1.6 GHz is not very wealthy for it.

Now I run Prime95 again on offset option and it is 14 hours stable yet and continues... So that´s why I ask, what you guys think about offset option, because to me it looks like a little OC miracle (if CPU drops down to 1.6 GHz, voltage automatically follows it down as well... and when it´s stressed and run on 4.5 GHz, voltage just rises as CPU needs).

But I feel, Neur0mancer, that you like more hard setting of voltage to 1.35 (which is very similar to my case before offset). Why don´t you like offset option, when it looks safer + efficient as well?
post #4 of 4
I have not tried offset again since switching to 1302 bios. But in earlier BIOS settings offset was based off of "whatever it felt like setting for auto" and I often times ended up with 1.6+vcore running.

1302 BIOS seems much more stable on the p8p67 so I might try setting offset again.
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