Energy efficient Sandy Bridge overclocking
Posted: Fri Jan 20, 2012 2:54 pm
I just got an Core i5 2500k on a Asus P8Z68-V, and oveclocked it to 4.5Ghz with a +0.075 vcore offset (could get more, but with too high temperature/noise and voltage).
The problem is that this overvolt also extends to the idle voltage, that is now needlessly over 1.000V. And I also can't lock it @1.6Ghz when I don't need the additional performance, but want silence and less power consumption.
I used to use k10stat on my Phenon, but I haven't found anything similar for Sandy Bridge. What can I do?
Also, this Asus board has lots of options that affect power usage, especially the VRM tunning and EPU. Most of what is written on the VRM tunning is directed at extreme overclocks. I assume that setting everything to the lowest/regular settings is the best power-wise, right? And I couldn't find any detailed explanation on what EPU do, and the difference between the light, medium and extreme power saving settings. So, I set it on auto. I also disabled every on-board controller that I don't use ATM (j-micron e-sata, bluetooth, etc), and I hope that it cuts the power they use.
The problem is that this overvolt also extends to the idle voltage, that is now needlessly over 1.000V. And I also can't lock it @1.6Ghz when I don't need the additional performance, but want silence and less power consumption.
I used to use k10stat on my Phenon, but I haven't found anything similar for Sandy Bridge. What can I do?
Also, this Asus board has lots of options that affect power usage, especially the VRM tunning and EPU. Most of what is written on the VRM tunning is directed at extreme overclocks. I assume that setting everything to the lowest/regular settings is the best power-wise, right? And I couldn't find any detailed explanation on what EPU do, and the difference between the light, medium and extreme power saving settings. So, I set it on auto. I also disabled every on-board controller that I don't use ATM (j-micron e-sata, bluetooth, etc), and I hope that it cuts the power they use.