Polaris Bios Editor – Modification of AMD Radeon RX 470/570/480/580

In this article we will teach you a easy way for executing bios mod on the Radeon RX 470/570/480/580, easy to execute, even for newbies.

This bios mod tutorial is for crypto mining purposes, such as Ethereum, Monero, Dubaicoin, etc.

  • Check what memory vendor you have with GPU-Z. 

In this case we have Elpida

  • Download the latest ATIWinFlash and save your bios.

  • Start Polaris Bios Editor or SRBPolaris. Open the bios.

  • Post  RX Performance timings

It can be used for RX 470/570 and 480/580 4GB or 8GB.

There are performance timings for all vendors Elpida, Hynix, Micron. You can google some of them also you can make your own.

Basically it’s just normal timing strap from card with tightening timings for better performance.

Beware of space before the strap while you copying the Uber-Mix 3.1!

Copy it to 1750 and 2000.

If you have more straps like this 1:xxxx 2:xxxx, you need to copy to the right one.

In VRAM section, there is dropdown menu: the  Elpida with E, Hynix with H and Samsung with K.

First one is 1:xxxx second one is 2:xxxx,

You can either higher or lower TDP if you want. Max memory clocks or Vcore

  • Undervolting

Undervolting will only work with Windows, if you need undervolt bios for Linux you need to do it in another way.

Do not put static voltages
Voltages like 65286 means they are dynamical for every card based on ASIC quality.

So you can flash the bios to all same cards (memory vendor) and it will work, every card will have similar voltages, some lower some higher.

The trick for undervolting is to put lower values than it is.

If you set clock in Afterburner or other you will see what voltages is that.

Do not lower voltages too much in bios, you can always undervolt in Afterburner.

Once you will know what voltages are stable you can put those dynamics values right for your card.

Also you can lower VDDC (VRM).
You can put values like 1000, 975, 950, lowering by -25mV. 975 and 950 should be stable on every cards, you can set 850 but this couldn’t be stable.

If you put lower voltages only to higher clocks it will always boot but in utilization it could be unstable.

  • Save the bios and flash it with ATIWINFLASH

Load bios, click program.

Your PC may freeze for some time, so you need to wait!

So did you learned about Polaris Bios Editor – Modification of AMD Radeon RX 470/570/480/580?

Please let us now your comments.

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