ATI Mobility Radeon HD 5850 Mac Edition 's Advantages
Released 2 years and 8 months late
More VRAM (1024GB vs 256GB)
Larger VRAM bandwidth (64.00GB/s vs 6.400GB/s)
784 additional rendering cores
NVIDIA GeForce 8400M GS 's Advantages
Lower TDP (11W vs 30W)