According to my test , display output is related to Object_Info/Object_Head table.
I've found these different definitions.
1DVI 1HDMI 3DP(Powercolor mining 1DVI 1HDMI 1DP use this in BIOS)
2DVI 1HDMI 1DP
1DVI 2HDMI 2DP(Sapphire mining single DVI use this in BIOS)
1DVI 1HDMI 1DP(Sapphire ITX card)
E387 should have the same phase quantity(4-phase GPU) as E353.
I flashed its vBIOS to E353, current reading is normal.
I haven't found a photo of E387.
Compared E387's vBIOS with E349(Reference RX470 4-phase) or E347(Nitro+ RX470 4-phase and RX480 5-phase) or Reference(6-phase), the VOI table is not like any of them.
Last edited by dsanke; 12-17-2018 at 09:51 AM.