From this guide http://www.overclock.net/t/1411077/haswell-overclocking-thread-with-statistics
: (honestly these guys here have more expreience than anyone on this platform, I am subbed and check in sometimes and they go through alot of these processors, Cryo is on his 4th or 5th if I recall correctly
Also, you may need to alter the voltages for SA, IO Analog, IO digital as well. Try adding 0.1v to them.Please note: It is unclear at this point what voltages are dangerous. Be careful with these voltages. JJ from Asus said these voltages help stabilize a higher Dram divider but I got 9c errors at as low as 1600 DDR3 while managing a stable 2133 OC without touching these.
CPU VID vs Vcore
There is a difference between CPU VID and CPU Vcore when I mention both of them together. I repeat: Only when I am talking about VID and Vcore in the same sentence does my definition of Vcore change.
Normally when I say Vcore I mean what you think I mean. But when I mention VID vs Vcore, VID is the amount of core voltage you set in the BIOS yourself. You should know it, you're the one that set the voltage in there. The Vcore is the number measured by Hwinfo or HWmonitor on your CPU when it is under max load.
What does this mean? Your Vcore could be above your VID. If you set 1.3v in the BIOS that's 1.3v VID. If you are also under adaptive voltage and you're running Prime95, your Vcore could be a whopping 1.5v, way above your set 1.3v.
Finally please note, there are multiple reports of people having a higher Vcore than VID even under non-synthetic loads but the extra voltage is relatively small. Just be careful and monitor voltages closely. As your VID increases the extra voltage drawn in from a regular non-synthetic load increases.
Override vs Adaptive: An analysis
My tests show that adaptive is a USELESS voltage mode.
Adaptive On Cstates Off showed the same idle voltage as Adaptive off (Override) Cstates off.
Adaptive Off Cstates On showed very low idle voltage.
Adaptive On Cstates On showed identical results to Adaptive Off Cstates On.
Having Adaptive On means your voltage increases by a large amount during a synthetic stress test. Because adaptive doesn't seem to do anything and of this possible safety hazard, I now recommend people to turn Adaptive OFF and Cstates ON to C7.
In all three cases, the idle clock speed of the processor did not change as measured by HWinfo. For this I also doublechecked with CPUZ and it agreed with HWinfo.