AMD FirePro W9000 's Advantages
More VRAM (6GB vs 2GB)
Larger VRAM bandwidth (264.0GB/s vs 144.2GB/s)
1088 additional rendering cores
NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Released 2 years and 3 months late
Boost Clock1032MHz
Lower TDP (140W vs 274W)