NVIDIA GeForce 9500M GS 's Advantages
More VRAM (512GB vs 256GB)
Lower TDP (20W vs 35W)
ATI Mobility Radeon HD 4670 Mac Edition 's Advantages
Released 1 years and 7 months late
Larger VRAM bandwidth (25.28GB/s vs 22.40GB/s)
288 additional rendering cores