Originally Posted by Escovado
I've been doing a lot of overclocking of my 4930K on a Rampage IV Extreme. I can get rock-solid stable overclocks at these frequencies and core voltage settings:
4.4GHz @ 1.38V (actual 1.4V).
4.5GHZ @ 1.42V(actual 1.44V).
4.6GHz @ 1.48V (actual 1.5V).
For 4.7GHz I have to set the core to 1.6V just to make it to the desktop; forget stability. I can get 4.46GHz if I bump the BCLK to 101MHz, but that's it. My experience has matched all the reviews I have read. The other chip voltages don't seem to make a whole heck of a lot of difference so far.
I'm setting the values manually. Since I'm new to this CPU architecture, does using the offset make any difference?
P.S. By stable I mean I can run the Cinebench renderers, wPrime, Prime95, Linpack (OCCT and Intel burn test) and AIDA64 without any errors or crashes.
If your motherboard has the vcore "offset" option, it just increases the longevity of your chip by reducing the voltage when your cpu downclocks and then increasing it again when the full vcore voltage is needed. In other words, if you pump 1.5v through your processor 24/7 it's going to degrade in, let's say for example, 1 year. But in offset mode, your bios would only give your cpu the full 1.5v vcore when it absolutely needs it (at 100% load), otherwise it would feed it less vcore when it's at lesser load. So, it doesn't really make a "difference" unless you're trying to push your chip to its max capability, and to do so you have to go beyond the generally recommended "safe" vcore ceiling (1.4v). If you're not pumping more than 1.4v through your cpu, it really makes no difference.
If your cpu needs 1.4v to be stable at just 4.4ghz you got a bum overclocker. You have LLC on High? If not, try increasing LLC and bringing vcore down a tiny bit and see if you're still stable.
and p.s. do NOT ever under ANY circumstance set vcore anywhere close to 1.6v. The silicon will literally melt. Around 1.5v you need to think carefully before going even .01v higher even for short-term benching. Try to keep it around 1.4v if you can. But NEVER set it to 1.6v -- if you tried that even for just a few minutes you probably already damaged your chip, that may be why it needs so much just to get to 4.4ghz.Edited by chrisnyc75 - 10/22/13 at 12:34pm