NVIDIA GeForce GTX 660 OEM 's Advantages
Boost Clock888MHz
Lower TDP (130W vs 250W)
AMD Radeon Pro Duo Polaris 's Advantages
Released 4 years and 8 months late
More VRAM (16GB vs 1GB)
Larger VRAM bandwidth (224.0GB/s vs 134.4GB/s)
1152 additional rendering cores