ATI Radeon HD 4870 Mac Edition 's Advantages
Released 1 years and 11 months late
More VRAM (512GB vs 320GB)
Larger VRAM bandwidth (108.8GB/s vs 63.36GB/s)
704 additional rendering cores
NVIDIA GeForce 8800 GTS 320 's Advantages
Lower TDP (143W vs 150W)