NVIDIA GeForce GTX 680MX Mac Edition 's Advantages
Released 2 years and 6 months late
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (160.0GB/s vs 25.44GB/s)
1136 additional rendering cores
ATI Mobility Radeon HD 5670 Mac Edition 's Advantages
Lower TDP (15W vs 122W)