NVIDIA GeForce GTX 680 Mac Edition 's Advantages
Released 11 months late
Boost Clock1058MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (192.3GB/s vs 28.80GB/s)
1440 additional rendering cores
NVIDIA GeForce GT 630 's Advantages
Lower TDP (65W vs 195W)