AMD Radeon 550X 's Advantages
Released 3 years and 9 months late
Boost Clock has increased by 25% (1218MHz vs 975MHz)
Lower TDP (50W vs 150W)
AMD Radeon R9 370 1024SP 's Advantages
Larger VRAM bandwidth (179.2GB/s vs 112.0GB/s)
512 additional rendering cores