NVIDIA GeForce 920M 's Advantages
Released 1 years and 4 months late
Lower TDP (33W vs 122W)
NVIDIA GeForce GTX 780M Mac Edition 's Advantages
Boost Clock797MHz
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (160.0GB/s vs 14.40GB/s)
1152 additional rendering cores