My specs. Notice my hardware so it might change with your setup, though the i5 and i7 OC aren't much different. I feel guilty in posting this but WTH...
Computer hardware:
i7 2600k
Asrock Extreme3 Gen3 Z68 mobo
Rosewill value series 600W (lol)
Cooler master hyper 212+
G skill sniper 8GB DDR3 1600mhz
ATI Radeon 5770
Load optimized-Default
CPU ratio-manual-42x
Internal PLL overvoltage-enabled
Intel Speedstep-enabled
Turbo boost power- manual (Edit: Remember to set to manual-if set to auto and turbo boost kicks in it resets your multiplier but not your voltages so you won't POST)
Short Duration power limit-200 (Edit: Higher or lower depending on PSU and OC hertz)
Long duration power limit-200 (Edit: Higher or lower depending on PSU and OC hertz)
Long duration maintained-1s
Additional turbo-auto
Core current limit-200
Host clock-100
spread spectrum-disabled
Power saving-off
CPU core- Offset mode- 1.28 v
Offset voltage-+0.050
CPU load line calibration -lvl. 4
(Now all 4 settings here are auto but I'm typing out here the voltages set at auto)
DRAM voltage- 1.5 (I'll OC later)
PCH voltage- 1.059v
CPU PLL voltage- 1.832v
VTT voltage-1.051
CPU C3-Disable (Edit: NOT optional-disable for max stability)
CPU C6-Disable (Edit: NOT optional-disable for max stability)
Intel Virtualization Technology- Enable
No execute memory protection-Disable (No idea, my brother did this for me...)
You can go lower on your PLL and offset voltage to save power, extend life, etc. Keep testing until you fail the stress test or POSTing. LLC on the Asrock- lvl 2 is 0 vdroop, but that mainly depends on your PSU quality and rails so might be different from yours. My PSU, as above, sucks **** so yeah...
Remember, you can always go higher or lower if you want. Keep on testing to find your sweet spot of the perfect balance between stability, power saving, and performance.