Originally Posted by FricoRico
I've had the time to thoroughly your BIOS in both Windows and Mac OSX. Sadly the BIOS changes did not make much of a difference. The GPU still freezes every few seconds and eventually the applications will crash. Tried it in Valley benchmark and some games.
Under Windows it's still rock solid and dependable, no negative changes in that regard.
I wonder how I would be able to diagnose the problem further. Maybe it's the BIOS not being flashed correctly? Maybe the GPU is still using more power resources under Mac or using it differently? Maybe it's not even power issues at all but KEXT driver instability problems (though I've seen others that had success with the RX480 under Mac OS). Any suggestions as to how to tackle to problem? Anyone?
If the flash was successful the modification would be there
. I have modified value to F instead of D , F is the highest bias I can enable to make the phases powered by PCI-E plugs to have more loading than PCI-E slot. As now the value is differing from windows driver, so it may change it to D when booted into it. Therefore I would always power down and up before going into Mac OSX if you have booted into windows.
Here is increased bias ROM.
GD25Q41B_Mod_GOP_v2.0.zip 111k .zip file
No experience of Mac OSX
. If in Mac OSX you have a SW tool that can read i2c information from IR3567B, we'd be able to confirm if the register that is setting VRM load balancing is being set as per ROM.