AMD Radeon R7 240 's Advantages
Lower TDP (30W vs 60W)
AMD Radeon RX 550X 640SP 's Advantages
Released 4 years and 6 months late
Boost Clock has increased by 37% (1071MHz vs 780MHz)
Larger VRAM bandwidth (96.00GB/s vs 28.80GB/s)
320 additional rendering cores