NVIDIA GeForce GTX 660M Mac Edition 's Advantages
Released 4 years and 8 months late
Larger VRAM bandwidth (80.00GB/s vs 51.20GB/s)
320 additional rendering cores
Lower TDP (50W vs 75W)
NVIDIA GeForce 9800M GTS 's Advantages
More VRAM (1024GB vs 512GB)