ATI Radeon HD 5870 Mac Edition 's Advantages
Lower TDP (228W vs 300W)
AMD Radeon HD 7970 GHz Edition 's Advantages
Released 2 years late
Boost Clock1050MHz
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (288.0GB/s vs 153.0GB/s)
448 additional rendering cores