Since GPU mining has become popular again with the raising price in ETH, ETC, XMR, and ZEC I thought I would share a quick guide on how to flash the bios on your GPU to increase the hashrate.
You will need 3 Application: GPU-Z, PolarisBiosEditor, and Atiflash.
links to the programs:
https://www.techpowerup.com/download/ati-atiflash/
https://github.com/caa82437/PolarisBiosEditor
https://www.techpowerup.com/gpuz/
First use GPU-Z to see what kind of memory your card has (if its Samsung you win the GPU memory lottery)
Steps to flashing:
- open atiflash NEEDS TO RUN AS ADMINISTRATOR
- save the original bios for your cards (do not lose these you will need incase you mess up)
- open Polaris Bios Editor
- open the bios for the cards you just saved
- edit the timings Note:The timings are different depending on the cards memory type
- save the modified Bios (different name from the original don't overwrite)
- open atiflash (run as admin)
- select the card you are going to flash
- click load image (bottom left) pick your modded Bios and open it
- click program
- wait till its done
- you are now finished it'll ask to restart only restart when you are done if you have more cards to flash click no
- more cards to flash? repeat steps 8-12
Note: If you have different types of cards ex: rx470,rx480 or different memory on cards ex: rx470 samsung mem, rx470 Hynix mem flash one card at a time to avoid problems.
If your cards are the same all the same type Ex: rx470 or rx480 and have same memory you can flash more than one card at a time.
Disclaimer: I am not responsible if you brick your GPU, do your research before hand.