AMD Radeon RX 550 640SP 's Advantages
Released 6 months late
Lower TDP (60W vs 150W)
AMD Radeon RX 570 's Advantages
Boost Clock has increased by 16% (1244MHz vs 1071MHz)
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (224.0GB/s vs 96.00GB/s)
1408 additional rendering cores