They have been done, i have done this months ago, shared the roms here as well. Check the op.
Links are working now, thanks. Do you have a thread for RX series / Polaris cards? My RX480's are dieing to get some static undervolting
Haha, no not really, i posted an RX rom somewhere with vddc offset, not sure where :p
Probably not going to create a thread regarding this. But perhaps some day..
Greetings
Hotmetal... the 480 thread is here https://bitcointalk.org/index.php?topic=1584617.msg15910357#msg15910357
scroll all the way down -- all the links to 480 mods are there.
I personally use the "480lowpowerOK" one for all my 480s with great results, saves power, not too hot and fast enough.