Mining BIOS for the PowerColor RX560-4GB mining card OEM with hybrid Samsung/Hynix VRAM.
350 H/s @ 30W(gpuz) XMR
PowerColor RX560-4GB (hybrid Samsung/Hynix) Mining BIOS
Update:
I've got the card hashing at 386 H/s on HYNIX cards!
PowerColor RX560-4GB (Hynix only!) Mining BIOS
Update 2:
Tested under Ubuntu 16.04 & driver 17.30 and I'm getting 398 H/s however the mainboard is newer on this rig.
Some issues with these cards I'm finding, the cards seem incompatible with the asrock H110 btc pro board and I can only get 4 of them to work together on a gigabyte 990 ud3 board.
Update 3:
After many hours of failure I found what works...
Under Ubuntu 16.04 you will need the following to make these cards work:
1. amdgpu-pro-fans -- https://github.com/DominiLux/amdgpu-pro-fans <--- set fans to 80%
2. ROCm 4.11 kernel -- https://rocm.github.io/ROCmInstall.html <--- you're totally screwed on these cards without this.
2(a). GRUB_CMDLINE_LINUX="amdgpu.vm_fragment_size=9" <--- for mining ETH & ETC.
*** 404 H/s ***
Under Windows 10-64bit you will need:
1. To hack the Windows driver signatures. -- atikmdag-patcher.7z.uue
Update 4:
These PowerColor cards suck. I got an Asus RX550-4GB that does 400 H/s @ 45W stock but the amdgpu-pro opencl is broken and windows has an 8 GPU limit.
I want to run these cards under Linux!!!! 
