ATI Radeon HD 5870 's Advantages
64 additional rendering cores
Lower TDP (188W vs 195W)
NVIDIA GeForce GTX 680 Mac Edition 's Advantages
Released 3 years and 7 months late
Boost Clock1058MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (192.3GB/s vs 153.6GB/s)