ATI Mobility Radeon HD 5770 's Advantages
Lower TDP (30W vs 122W)
NVIDIA GeForce GTX 680MX Mac Edition 's Advantages
Released 2 years and 9 months late
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (160.0GB/s vs 51.20GB/s)
1136 additional rendering cores