NVIDIA GeForce GTX 680 Mac Edition 's Advantages
Released 4 years and 7 months late
Boost Clock1058MHz
More VRAM (2GB vs 256GB)
Larger VRAM bandwidth (192.3GB/s vs 22.40GB/s)
1216 additional rendering cores
ATI Radeon HD 4650 's Advantages
Lower TDP (48W vs 195W)