NVIDIA GeForce GTX 780M Mac Edition 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (160.0GB/s vs 14.40GB/s)
1216 additional rendering cores
AMD Radeon R5 M230 Rebrand 's Advantages
Released 6 months late
Boost Clock has increased by 7% (850MHz vs 797MHz)