AMD Radeon Pro 575X 's Advantages
Released 4 years and 4 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (217.6GB/s vs 174.7GB/s)
1024 additional rendering cores
AMD Radeon R9 M290X Mac Edition 's Advantages
Boost Clock975MHz
Lower TDP (80W vs 150W)