NVIDIA GeForce GTX 1080 's Advantages
Boost Clock has increased by 46% (1733MHz vs 1183MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (320.3GB/s vs 112.0GB/s)
2048 additional rendering cores
AMD Radeon RX 550 's Advantages
Released 11 months late
Lower TDP (50W vs 180W)