AMD Radeon 550X 's Advantages
Released 11 months late
Lower TDP (50W vs 150W)
AMD Radeon RX 570X 's Advantages
Boost Clock has increased by 2% (1244MHz vs 1218MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (224.0GB/s vs 112.0GB/s)
1536 additional rendering cores