NVIDIA GeForce GTX 980 Mobile 's Advantages
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (224.4GB/s vs 224.0GB/s)
640 additional rendering cores
AMD Radeon Pro W5500M 's Advantages
Released 4 years and 5 months late
Boost Clock has increased by 49% (1700MHz vs 1140MHz)