AMD Radeon HD 7970 GHz Edition 's Advantages
Released 1 years and 11 months late
Boost Clock1050MHz
More VRAM (3GB vs 1GB)
Larger VRAM bandwidth (288.0GB/s vs 76.48GB/s)
1248 additional rendering cores
ATI Radeon HD 5770 Mac Edition 's Advantages
Lower TDP (108W vs 300W)