AMD Radeon R9 M390 Mac Edition 's Advantages
Lower TDP (80W vs 85W)
AMD Radeon Pro W5300M 's Advantages
Released 4 years and 6 months late
Boost Clock1250MHz
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (192.0GB/s vs 174.7GB/s)
256 additional rendering cores