 The fourth generation GCN instruction set architecture is compatible with the third generation.It is an optimization for 14 nm FinFET process enabling higher GPU clock speeds than with the 3rd GCN generation.Architectural improvements include new hardware schedulers, a new primitive discard accelerator, a new display controller, and an updated UVD that can decode HEVC at 4K resolutions at 60 frames per second with 10 bits per color channel.