Hi everyone,

I have problems to undervolt memory and core voltages.

Usually I mine with claymore at 0.85v (stable) with the commands -mvddc -cvddc and all is good, but I want to try nicehash.

So, I own rx 580 8gb;
 
I cannot undervolt with msi afterburner, memory voltage is locked for amd cards I read...I can only set core voltage but it's not enough to get me to 0.85v that I can reach with claymore.
I cannot undervolt with nicehash, it says failed to modify voltage.
I read editing voltages with polaris bios editor has no effect, I also tried to set 850 and it does not work.

How can I reach 0.85v or undervolting memory (and also core) in general, please?
Is the only option left to edit bios with hex editor? Am I missing something?

Thanks
Happy mining