NVIDIA GeForce GTX 780M Mac Edition 's Advantages
Released 8 months late
More VRAM (4GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 36.00GB/s)
1216 additional rendering cores
AMD Radeon HD 8590M 's Advantages
Boost Clock has increased by 4% (825MHz vs 797MHz)