There is Sapphire RX-560 with 6 pin power.
This board BIOS cannot be flash with any version shared here, by priviet and angel_v

Tried to flash with Priviet Bios, no go.
Modify any value in this 6 pin powered GPU, it will not start.

http://i64.tinypic.com/iwt1tg.png

Attached is the original bios for this board. [Sapphire Radeon RX 560 4gb OC +6 PCIE powered]

http://s000.tinyupload.com/index.php?file_id=03713297403569951899