NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Released 1 years and 11 months late
Boost Clock1032MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (144.2GB/s vs 8.000GB/s)
880 additional rendering cores
ATI Radeon HD 5490 's Advantages
Lower TDP (19W vs 140W)