AMD Radeon Pro Duo Polaris 's Advantages
Released 3 years and 1 months late
More VRAM (16GB vs 3GB)
512 additional rendering cores
AMD Radeon R9 280 's Advantages
Boost Clock933MHz
Larger VRAM bandwidth (240.0GB/s vs 224.0GB/s)
Lower TDP (200W vs 250W)