ATI Radeon HD 4870 Mac Edition 's Advantages
Lower TDP (150W vs 230W)
AMD Radeon Pro WX 9100 's Advantages
Released 8 years and 6 months late
Boost Clock1500MHz
More VRAM (16GB vs 512GB)
Larger VRAM bandwidth (483.8GB/s vs 108.8GB/s)
3296 additional rendering cores