AMD Radeon R9 M290X Mac Edition 's Advantages
Released 4 years and 10 months late
Boost Clock975MHz
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (174.7GB/s vs 11.20GB/s)
1008 additional rendering cores
NVIDIA GeForce 305M 's Advantages
Lower TDP (14W vs 80W)