AMD Radeon RX 560X 's Advantages
Released 4 years and 4 months late
Boost Clock has increased by 37% (1275MHz vs 930MHz)
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (112.0GB/s vs 73.60GB/s)
512 additional rendering cores
AMD Radeon R9 255 OEM 's Advantages
Lower TDP (65W vs 75W)