NVIDIA GeForce 9800M GTS 's Advantages
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (51.20GB/s vs 25.44GB/s)
ATI Mobility Radeon HD 5670 Mac Edition 's Advantages
Released 1 years and 8 months late
336 additional rendering cores
Lower TDP (15W vs 75W)