NVIDIA GeForce GTX 660 OEM 's Advantages
Released 1 years and 7 months late
Boost Clock888MHz
More VRAM (1536GB vs 1024GB)
Larger VRAM bandwidth (134.4GB/s vs 76.80GB/s)
352 additional rendering cores
AMD Radeon HD 6770 's Advantages
Lower TDP (108W vs 130W)