AMD Radeon HD 6630M Mac Edition 's Advantages
Larger VRAM bandwidth (19.20GB/s vs 12.80GB/s)
288 additional rendering cores
Lower TDP (26W vs 33W)
NVIDIA GeForce GT 720M 's Advantages
Released 2 years and 11 months late
Boost Clock758MHz
More VRAM (2GB vs 256GB)