New firmware for Fury X and Nano cards could speed up boot times
 

Owners of top-end Radeons looking for the fastest possible boot times may have been stymied by those cards' firmware. Although the majority of modern motherboards include UEFI firmwares, the R9 Fury X and R9 Nano still use the legacy VGA option BIOS for maximum compatibility. This choice means slower boot times, since UEFI motherboards have to load a "Compatibility Support Module" for legacy firmware. Video cards can now use the UEFI Graphics Output Protocol for initialization, but graphics cards with UEFI-compatible firmwares don't work with motherboards that rely on the good old BIOS.

http://techreport.com/news/29997/new...-up-boot-times