NVIDIA GeForce GTX 680MX Mac Edition 's Advantages
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 16.00GB/s)
1440 additional rendering cores
NVIDIA GeForce 720A 's Advantages
Released 1 years and 9 months late
Boost Clock938MHz
Lower TDP (33W vs 122W)