AMD Radeon 550X 's Advantages
Released 6 years and 7 months late
Boost Clock has increased by 24% (1218MHz vs 980MHz)
Lower TDP (50W vs 150W)
NVIDIA GeForce GTX 660 Ti 's Advantages
Larger VRAM bandwidth (144.2GB/s vs 112.0GB/s)
832 additional rendering cores