Efi Clover bootloader for Laptop Alienware M17x R3 with AMD Radeon HD 6850M video card. This EFI work for Sierra, High Sierra with video acceleration for AMD video Card and Mojave to Catalina without full grafic acceleration but work FN keys, sleep and wake, audio volume, brightness keys, USB 3.0, SDHC not tested yet, Wi Fi and bluetooth, FN + F1, F3, F4 - F5, F6, F9, F10, F12. Laptop have bios A12 unlocked and sata 6Gb.
IGPU has disable in bios, SMBios is MacBook Pro 8,3 and work very well. For Wi Fi is itlwm.kext and must install heliport app, work well.