NVIDIA GeForce GTX 680 Mac Edition 's Advantages
128 additional rendering cores
AMD Radeon Pro W5500 's Advantages
Released 6 years and 10 months late
Boost Clock has increased by 75% (1855MHz vs 1058MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (224.0GB/s vs 192.3GB/s)
Lower TDP (125W vs 195W)