NVIDIA GeForce GTX 680 Mac Edition 's Advantages
Released 9 months late
Boost Clock1058MHz
More VRAM (2GB vs 1GB)
Larger VRAM bandwidth (192.3GB/s vs 22.40GB/s)
1392 additional rendering cores
NVIDIA GeForce GTS 450 Rev. 3 's Advantages
Lower TDP (106W vs 195W)