ATI Radeon HD 3870 Mac Edition 's Advantages
Lower TDP (106W vs 228W)
ATI Radeon HD 5870 Eyefinity 6 's Advantages
Released 1 years and 9 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (153.6GB/s vs 72.06GB/s)
1280 additional rendering cores