Originally Posted by oicwutudidthar
Do i use + or -?
You use whatever it takes to get the voltage where you want it. So if you need 1.20V for a stable overclock, then put in a +0.005 and see what that gets you under load. If +0.005 results in a load Vcore of 1.115 (for example) then you'd need to change the offset to +0.01 instead. Offset just adds whatever you specify to the chip VID at that freq, but since you don't know the VID (and the effects of LLC) you have to do some trial and error.
It's also recommended to run a lower setting of LLC when using offset, to help prevent idle crashes.