NVIDIA GeForce GTX 680M 's Advantages
Released 4 years and 8 months late
Boost Clock758MHz
More VRAM (4GB vs 512GB)
Larger VRAM bandwidth (115.2GB/s vs 20.32GB/s)
1312 additional rendering cores
NVIDIA GeForce 8600M GT Mac Edition 's Advantages
Lower TDP (20W vs 100W)