AMD Radeon RX 480 Mobile 's Advantages
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 96.00GB/s)
1664 additional rendering cores
AMD Radeon RX 550 Mobile 's Advantages
Released 11 months late
Boost Clock has increased by 19% (1287MHz vs 1077MHz)
Lower TDP (50W vs 100W)