NVIDIA GeForce GT 520MX 's Advantages
Larger VRAM bandwidth (14.40GB/s vs 12.80GB/s)
Lower TDP (20W vs 33W)
NVIDIA GeForce GT 720M 's Advantages
Released 2 years and 7 months late
Boost Clock758MHz
More VRAM (2GB vs 1024GB)
144 additional rendering cores