Quote Originally Posted by Sam_oslo View Post
If you guys are trying to get power savings with offset mode, then a low-volt 24/7 setup can be a good alternative.
Many of these chips should do 4-4.2GHz with low-volt, easily. Anything over 4Ghz would be overkill for most desktop application, anyways.

I've used manual-vCore and Load Line Calibration = Ultra High for @4.2GHz 1.19v/1.17v (Idle/load) and tested it with 30-min Prime.
I used it for several days without any problem, and then increased the vCore by one notch, just to keep it on the sure side, and call it stable, until it crashes on me.

The best part, it idles with 1.19-1.20v with little heat and power-usage, and all fans are running quietly at ~60%, etc ..
I've under-volted almost everything else too, including the PCH=1.0v to reduce leakage. Here it it's:

I was just going back through some of the posts ...
First of all you don't need LLC @Ultra HIgh for 4.2 at all
30-min Prime is a joke to call it " stable" no offense (min 1~6 hours in my opinion)
Here is the thing that caught my eye:
CPUPLL-- this voltage is for the internal clock generator for CPU (PLL that gives you 3.4GHZ for 26K and 5.2+ overclocked) maximum 1.89/1.8 stock if you want to save power and keep temps down ,you could turn it down to 1.71v

VCCIO aka QPI/VTT--processor power for I/O (voltage for integrated mem controller and PCI-E controller) maximum is 1.05+/- 3% no need in changing this 1.08 is absolutely safe and you can go as high as 1.2 for 24/7 it will allow you to OC you RAM but increase your temps

VCCSA aka System Agent Voltage--Maximum 0.971v ,minimum 0.879v
Stock 0.925v System Agent should Not be touched ,it is supposed to be fixed, it powers a lot of things that the VCC does not power like Power Control
Most of this is based on recommendations on overclocking the K series which i found very helpful and written by Sin
http://www.overclock.net/intel-gener...uide-p67a.html

here is the update on the offset ( i thing i found my 24/7 )
@ 4.7 Medium LLC @110% +.06 (minimum load 1.024v / max 1.368v)
stable under P95 blend (1hour+) and Linx (20 passes ),no BSOD so far ,will give few more days @"light load" and probably run P95 overnight
@ 4.7 High LLC@120% +.045 (min as low as 1.000v / Max 1.400 )

will report back if something pop out
P.S I guess i found choice #4
crank that bad boy up ,it's K series for crying out loud !