Thanks doktor83!
Your rom allowed 4x Sapphire Nitro 480 8GB reach 29.3MH/s (Micron).
I tweaked the settings a bit, but I mostly needed the straps as PBE wouldn't work.
1100 GPU/1000 mV
2050 Memory/1000 mV
Fan minimum 50% makes them run smooth.
I can't confirm his rom is best, but at least the straps are changed. What strap mod did you perform?
how lucky you are
i got artifacts on doctor83's bios
I think Micron might be hit or miss maybe?
If it is of any use, the ASIC qualities in GPU-Z are 70.4%, 68.7%, 68.3%, 79.5%.
Has been running stable 29.3MH/s for 3 days now. Lets see if it crashes eventually.