XFX RX 480 (RX-480M8BFA6) Modded Bios

Hello,

I'm trying to increase the hash rate for my 6 XFX RX 480 (RX-480M8BFA6), but no matter which bios I try, none is better than the stock bios.

Mobo: Asrock H81
OS: Windows 8.1
Driver: 16.9.1

In fact, every bios results in a lower hash rate than the stock bios.

Stock: 22 MHs
Other ones: 8 - 20 MHs

These are some of the ROMs I already tried, but none gave me a better hash rate:

• Several from Anorack (memshift, overclock)
  
• low-pwr-29MH-Boysie.rom
  
• 3x3LowPwr.rom
  
• WIN-RX480-31.25-Boysie_v2.rom
  
• RX480-32MhOTB
  
• RX480-30MhOTB
  
• 480LowEnergyOK
  
• RX480Mod.zip
  

I also tried copying the 1750MHz strap to the 2000MHz strap of my stock bios, but that's not stable.

Do you have any idea what could be the reason that no other ROM gives me a higher hash rate? Or has anyone already made a bios for this specific type of RX480?

Thanks very much.

Kind regards,
- hwlgraka