NVIDIA GeForce GTX 1080 Ti 's Advantages
Boost Clock has increased by 34% (1582MHz vs 1183MHz)
More VRAM (11GB vs 2GB)
Larger VRAM bandwidth (484.4GB/s vs 56.00GB/s)
3072 additional rendering cores
AMD Radeon 550 's Advantages
Lower TDP (50W vs 250W)