ATI Radeon HD 5770 's Advantages
Lower TDP (108W vs 195W)
NVIDIA GeForce GTX 680 Mac Edition 's Advantages
Released 3 years and 6 months late
Boost Clock1058MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (192.3GB/s vs 76.80GB/s)
736 additional rendering cores