AMD Radeon Pro Vega 64X 's Advantages
More VRAM (16GB vs 4GB)
Larger VRAM bandwidth (512.0GB/s vs 224.0GB/s)
2688 additional rendering cores
AMD Radeon Pro W5500M 's Advantages
Released 11 months late
Boost Clock has increased by 16% (1700MHz vs 1468MHz)
Lower TDP (85W vs 250W)