NVIDIA GeForce GTX 680MX Mac Edition 's Advantages
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 16.02GB/s)
1344 additional rendering cores
NVIDIA GeForce 805A 's Advantages
Released 1 years and 9 months late
Boost Clock758MHz
Lower TDP (15W vs 122W)