AMD Radeon RX 6800 's Advantages
Released 6 years and 10 months late
Boost Clock has increased by 126% (2105MHz vs 930MHz)
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (512.0GB/s vs 73.60GB/s)
3328 additional rendering cores
AMD Radeon R9 255 OEM 's Advantages
Lower TDP (65W vs 250W)