NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Lower TDP (140W vs 250W)
NVIDIA GeForce GTX 1080 Ti 12 GB 's Advantages
Boost Clock has increased by 62% (1670MHz vs 1032MHz)
More VRAM (12GB vs 2GB)
Larger VRAM bandwidth (528.4GB/s vs 144.2GB/s)
2240 additional rendering cores