AMD Radeon R9 M390 Mac Edition 's Advantages
Lower TDP (80W vs 115W)
NVIDIA GeForce RTX 3080 Ti Mobile 's Advantages
Released 6 years and 8 months late
Boost Clock1260MHz
More VRAM (16GB vs 2GB)
Larger VRAM bandwidth (512.0GB/s vs 174.7GB/s)
6400 additional rendering cores