AMD Radeon Pro 580 's Advantages
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (217.0GB/s vs 144.0GB/s)
1280 additional rendering cores
AMD Radeon RX 6550M 's Advantages
Released 5 years and 7 months late
Boost Clock has increased by 137% (2840MHz vs 1200MHz)
Lower TDP (80W vs 185W)