Linux kernel patches reference an AMD "Sienna Cichlid" GPU, which Phoronix believes could be the fabled "Big Navi" GPU. We know this is a GPU and not a headless CDNA scalar processor as the patches include code for VCN 3.0 video encoding capabilities ( RDNA2's media engine), and DCN3 (RDNA2's display engine), which constitute bulk that AMD could get rid of on CDNA chips. The unusual internal codename could reference AMD's next generation RDNA2 architecture based flagship GPU, armed with 80 compute units (5,120 stream processors), Radeon Intersection Engines (accelerate real-time ray-tracing). The codename comes across as unusual, but AMD does tend to use wacky internal codenames to detect sources of leaks.