AMD Radeon R9 280 's Advantages
Larger VRAM bandwidth (240.0GB/s vs 25.60GB/s)
1024 additional rendering cores
AMD Ryzen Z1 Extreme GPU 's Advantages
Released 9 years and 3 months late
Boost Clock has increased by 189% (2700MHz vs 933MHz)
More VRAM (16GB vs 3GB)
Lower TDP (30W vs 200W)