NVIDIA GeForce GTX 560 Ti X2 's Advantages
Lower TDP (170W vs 195W)
NVIDIA GeForce GTX 680 Mac Edition 's Advantages
Released 2 years and 3 months late
Boost Clock1058MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (192.3GB/s vs 128.3GB/s)
1152 additional rendering cores