NVIDIA GeForce GTX TITAN 's Advantages
Released 6 months late
More VRAM (6GB vs 2GB)
Larger VRAM bandwidth (288.4GB/s vs 144.2GB/s)
1344 additional rendering cores
NVIDIA GeForce GTX 660 Ti 's Advantages
Boost Clock has increased by 12% (980MHz vs 876MHz)
Lower TDP (150W vs 250W)