AMD Radeon RX 590 's Advantages
Released 5 years late
Boost Clock has increased by 98% (1545MHz vs 780MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (256.0GB/s vs 14.40GB/s)
1920 additional rendering cores
AMD Radeon R5 240 OEM 's Advantages
Lower TDP (50W vs 175W)