Using load line calibration or not

atchard

Honorable
Jan 13, 2017
9
0
10,510
I've got a question about what voltage you want to be setting, in conjunction with a LLC setting. I have Gigabyte z270x gaming 5, and a 7700k, which doesn't seem to be that great of a unit, can't get 5ghz stable at 1.35v. Since I don't currently have a liquid cooling setup, any higher on the voltage and the temps get too high for my liking. Decided to just stick with 4.8ghz, but that's where I have a question.

I am able to get it stable at either 1.2v, high LLC, or 1.275v, auto LLC, which is basically low/off from what I can tell. I understand more or less what LLC is doing, what I am wondering is, is there any point in having the voltage be higher, in this case at or around 1.275v, and have it droop under load down to about 1.2, versus having the voltage be lower under normal use, at 1.2 in this case, and have it stay pretty close to that under load, with perhaps a slight droop sometimes(though it mostly actually over-compensates and bumps up to 1.212v)?

Seems to me it would be better in terms idle temps/life of the chip to have it have a lower usage during idle, rather then giving it way more than is necessary, all to compensate for the fact that it'll droop under load. I understand that droop is part of the spec, in order to prevent the voltage from spiking up higher then necessary when shifting under load, but the highest I've seen it go under this setting is 1.212 or so, unless it's happening too fast to be detected, and so again, wondering if the lower idle vCore is something to aim for.
 
Solution
Set LLC to high, it essentially helps to adjust for vdroop, which is the variation in voltage during use. High is the brings the actual voltage closest to what it should be.

Lsantana954

Commendable
Sep 6, 2016
2
0
1,510
Those are good voltage numbers. I have the same board and cpu. At 4.8 ive been stable at 1.32 with LLC at turbo using prime95 for stability testing. The monitoring software I used indicated a high voltage of 1.39 and highest temp was 77C. I'm using an Cryorig R1 universal cooler and cpu delid.

With LLC at auto the highest voltage I've tested has been 1.36 and it wasn't stable using prime95.