i have an asus rog crosshair hero vii
until *a few hours ago* i ran my 3900x@4.45ghz using 1.325v
then i switched the ram (ddr2400 -> ddr3600), reset the cmos, entered my oc settings again, but:
* if i touch the multiplier, my vcore is stuck at 1.1 and doesn't move.
* if i do not touch the multiplier, the vcore is dynamic like it should be
in both cases, my manual vcore setting is ignored. the correct (set by me) vcore is shown as active in the bios, but not in windows. the system isn't stable anymore when i run cinebench r20 when i overclock the cpu via bios.
i can still override both vcore and multiplier with ryzen master, but ryzen master only allows a "max vcore", not a "min vcore". to get my system stable, i need to run at 1.325, not below, but if i set the max voltage to 1.325 in ryzen master, the voltage will go down under load. i need to set it to ~1.4v to get to a minimum of 1.325, but i would like to avoid high voltages.
how can i fix this? what is going on? how can changing the memory cause this?
i am using the most recent bios.