AMD Radeon Pro Duo Polaris 's Advantages
Released 3 years and 5 months late
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (224.0GB/s vs 179.2GB/s)
1024 additional rendering cores
AMD Radeon R9 270 's Advantages
Boost Clock925MHz
Lower TDP (150W vs 250W)