ATI Radeon HD 3870 Mac Edition 's Advantages
Lower TDP (106W vs 170W)
NVIDIA GeForce GTX 670 's Advantages
Released 3 years and 11 months late
Boost Clock980MHz
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (192.3GB/s vs 72.06GB/s)
1024 additional rendering cores