ATI Mobility Radeon HD 5670 Mac Edition 's Advantages
Larger VRAM bandwidth (25.44GB/s vs 16.02GB/s)
304 additional rendering cores
Lower TDP (15W vs 33W)
NVIDIA GeForce GT 720A 's Advantages
Released 4 years and 3 months late
More VRAM (1024GB vs 512GB)