NVIDIA GeForce GTX 660 Ti 's Advantages
Boost Clock has increased by 12% (980MHz vs 876MHz)
Lower TDP (150W vs 375W)
NVIDIA GeForce GTX TITAN Z 's Advantages
Released 1 years and 9 months late
More VRAM (6GB vs 2GB)
Larger VRAM bandwidth (336.0GB/s vs 144.2GB/s)
1536 additional rendering cores