AMD Radeon R9 M290X Mac Edition 's Advantages
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (174.7GB/s vs 16.02GB/s)
640 additional rendering cores
NVIDIA GeForce 940A 's Advantages
Boost Clock has increased by 15% (1124MHz vs 975MHz)
Lower TDP (33W vs 80W)