Originally Posted by coolkwc
Guys, i have really no idea how to use adaptive offset vcore for an overclocked 9900k
Ok, let say now my 9900k stable at manual Vcore 1.3V with Turbo LLC, what kind of adaptive offset and LLC i shall set?
At 1st i though my normal Vcore is 1.2V, so i just use +0.1V offset and hell my vcore in Bios shown 1.5V, it frighten me. Any wrong with my setting? or i shouldn't use adaptive vcore for OC CPU??
You need to learn how the AC Loadlines and base VID's work.
And the reason you had 1.5v is because you combined a high AC Loadline with an aggressive loadline calibration (VRM loadline). And *then* you threw on a +100mv offset on TOP of that. This can degrade the processor as well. AC Loadline is part of cpu internal power management and loadline calibration (VRM Loadline) is external power management (motherboard based).
Please take the time to read my other posts about that here and in the 9900k thread.
AC Loadline value that is used gets its values from CPU Internal AC/DC Loadline presets, unless AC Loadline in Internal VR Settings is set to a non auto (zero) value, then the VR setting takes higher priority and will overrule the presets.
Auto: Let motherboard decide based on multiplier.
Power saving: 0.4 mOhms AC, 1.3 mOhms DC (milliOhms)
Balanced: 1.0 mOhms AC, 1.3 mOhms DC
Turbo (max Intel spec 8 cores): 1.6 mOhms AC, 1.6 mOhms DC
Extreme (max Intel spec 6 cores): 2.1 mOhms AC, 2.1 mOhms DC.
Values in internal VR settings are 1/100 Ohm. 100=1.0 milliOhms, 1=0.01 milliOhms.
Basic rule: the higher the AC Loadline value, the LOWER the VRM Loadline (LLC) value should be (VRM Loadline calibration is also in milliOhms, even though the ODM's don't tell you this in the motherboard manuals; a higher level of Vcore loadline calibration=lower resistance (mOhms)=less vdroop. Lower levels=higher resistance=more vdroop. Intel doesn't factor in LLC into their specs, they design for spec vdroop loadline of 1.6 mOhms (8 cores), 2.1 mOhms vdroop loadline (4 and 6 core CFL chips).
If that didn't make sense:
Higher AC Loadline = use more vdroop (less aggressive loadline calibration or use Intel spec).
Lower AC Loadline = you can use less vdroop (more aggressive LLC).
1.6 mOhms ACLL is only safe with VRM Loadline at Standard or Normal (Intel spec vdroop of 1.6 mOhms).
HWinfo64 (extended CPU information section) will show the currently used AC and DC Loadline values.
I also wrote some stuff here.