NVIDIA GeForce GTX 780M Mac Edition 's Advantages
Released 4 years and 5 months late
Boost Clock797MHz
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 51.20GB/s)
1440 additional rendering cores
NVIDIA GeForce GTS 250M 's Advantages
Lower TDP (28W vs 122W)