AMD Radeon R9 M290X Mac Edition 's Advantages
Released 3 years and 10 months late
Boost Clock975MHz
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (174.7GB/s vs 28.80GB/s)
928 additional rendering cores
NVIDIA GeForce GT 540M 's Advantages
Lower TDP (35W vs 80W)