In this post, I’m going to be discussing how to bios mod AMD GPUs and how it affects the hashrate. Here it goes, well let’s start with some statistics, stock AMD 580 8GB GPU does 24MH/s or close to that out of the box, BUT after a BIOS mod, they do anywhere from 30MH/s to 32MH/s, so a BIOS mod needed, well it’s approximately you to decide.
Connected below is the tool most people use to mod a BIOS, it’s known as Polaris BIOS Editor, and because we can’t find PBE on the interwebs, we chose to publish our copy of it.
- Polar Bios Editor for windows computer systems
- Submit transfer programs like WinSCP, FileZilla, or MobaXTerm for windows computers
Bios modding Guide
Using a Windows computer system, we will conserve the GPU bios on principles, transfer it to windows, modify the bios file, move it back to principles, and then flash the GPU’s with the modified bios file.
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Steps To Mod Bios
On the windows computer open Putty or MobaXterm and SSH into the ethos miner, Run the command.
sudo atiflash -s 0 original-RX580-xxx-xxx-xxx-Micron. rom.
Where 580 is the model of the GPU, xxx-xxx-xxx is the bios ID, and Micron is the memory, all of this can be discovered in the statistics command run from principles. If the memory is Unknown, then the chances are its Micron.
Next use the file transfer program of your choice to copy the file off of EthOS and put it on your windows computer system.
Now you can utilize Polaris Bios Editor 1.6.7, load the original bios file and utilize the “One Click Timing” button to upgrade the memory timing straps on your bios. Conserve the file changing the file name from original to customized, and this action is done.
Practically there, utilize your file transfer program to copy the customized file back to the EthOS miner.
Finally, on the SSH terminal, again run the command.
sudo atiflash -p 0 modified-RX580-xxx-xxx-xxx-Micron. rom.
You must see the GPU being flashed at this moment. Once done either flash another GPU or reboot the miner with.
That’s all; you are done flashing the vbios on EthOS.
We suggest using the One-Click Timing button and not other edits because the EthOS config file can deal with the majority of the GPU’s vbios requires. By making vbios mods tough set in the vbios, some will stack on EthOS settings and others are not permanently beneficial. The more that is altered in them, the regularly they require updating.