Does anyone know which is stable downvolt for SAPPHIRE RX480 NITRO OC + for 1342 MHZ GPU and 2000 MHZ for memory?

I use a modded bios(which I have posted) and 1125/2080 -100mv works well even with a monitor attached. About 152 sol/s but is only like 55 watts.

@Xardas2014 mind to share again the modded bios?