AMD Radeon Pro 580 's Advantages
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (217.0GB/s vs 96.00GB/s)
1664 additional rendering cores
AMD Radeon RX 550 Mobile 's Advantages
Boost Clock has increased by 7% (1287MHz vs 1200MHz)
Lower TDP (50W vs 185W)