AMD Radeon Pro W6900X 's Advantages
Released 7 years and 5 months late
Boost Clock has increased by 130% (2150MHz vs 933MHz)
More VRAM (32GB vs 3GB)
Larger VRAM bandwidth (512.0GB/s vs 240.0GB/s)
3328 additional rendering cores
AMD Radeon R9 280 's Advantages
Lower TDP (200W vs 300W)