ATI Radeon HD 5870 Mac Edition 's Advantages
Larger VRAM bandwidth (153.0GB/s vs 112.0GB/s)
832 additional rendering cores
AMD Radeon Pro W6400 's Advantages
Released 11 years and 7 months late
Boost Clock2331MHz
More VRAM (4GB vs 1024GB)
Lower TDP (50W vs 228W)