AMD Radeon R9 370 's Advantages
Larger VRAM bandwidth (179.2GB/s vs 96.00GB/s)
768 additional rendering cores
AMD Radeon RX 550 512SP 's Advantages
Released 2 years and 5 months late
Boost Clock has increased by 10% (1071MHz vs 975MHz)
Lower TDP (50W vs 110W)