NVIDIA GeForce 8600 GTS Mac Edition 's Advantages
Lower TDP (75W vs 151W)
AMD Radeon HD 6850 1440SP Edition 's Advantages
Released 4 years and 11 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (128.0GB/s vs 32.26GB/s)
1408 additional rendering cores