AMD Radeon R9 M290X Mac Edition 's Advantages
Released 2 years and 1 months late
Boost Clock975MHz
Larger VRAM bandwidth (174.7GB/s vs 67.20GB/s)
64 additional rendering cores
NVIDIA GeForce GTX 670MX 's Advantages
More VRAM (3GB vs 2GB)
Lower TDP (75W vs 80W)