Question How to flash an RX480 Into RX580

[NightHawkRMX]

Hello, I just bought a Sapphire Nitro+ AMD Radeon RX480 8gb. The card came with corrupt Vbios causing error code 43 even though it was supposedly refurbished, so I reflashed a non-corrupt version of the original bios using AMDVbiosflashwin. Now the GPU works great, however more performance for free is always appreciated, so I would like to turn this card into an rx580 8gb. Since this is a good 480 model, It should handle 580 clocks correct?

When I try to flash a 580 Nitro+ 8gb bios to the 480 using AMDvbiosflashwin the program throws a ssid error. I read to use atiwinflash in command prompt to force the 580 bios on the card, however, ATIwinflash says it cannot find any ATI discrete cards in the system. How do I fix this?

I am using atiwinflash -f -p 0 RX580.rom in the command prompt where RX580 is the new bios file and 0 is my primary GPU (rx480). It brings up a flashing message but says it cannot find any ati GPU.

What can I do to fix this?
Here is my card with current bios and driver version shown:

https://imgur.com/a/EvyZFGX

View: https://imgur.com/a/EvyZFGX

 

[RodneyDawn]

you shouldnt flash a 580 bios to a 480 you should edit a 480 bios to the same clocks as a 580 and increase voltages slightly
flashing a 580 bios wont enable more shaders and will most likely brick your card, but editing a 480 bios to 580 clock speeds should work.

 

[NightHawkRMX]

Actually, the 580 bios have very similar clocks to the 480 bios, so i would just like to "have a 580 according to software".

 

[Deleted member 14196]

You can’t go get a 580

 

[NightHawkRMX]

Well I mean i could, but the 480 was alot cheaper and I read you could reflash it into a 580. I have already had to reflash the bios once, so doing it again wont be hard.

 

[Wendigo]

No, there’s no warranty the RX480 will work at RX580 speed.

Instead of flashing the BIOS, why not simply overclock the card in Wattman? Much safer and easier...

 

[NightHawkRMX]

Well i dont think i will flash it. I have head the sapphire cards like mine will have vrm thermal issues running as a 580. My 480s core gets to about 78c in superposition, so i dont have much thermal headroom either.

 

[NightHawkRMX]

What is a good ASIC quality? My 480 says 75.1% in GPUZ