Quadro M2000 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (105.8GB/s vs 48.06GB/s)
384 additional rendering cores
Quadro P520 Mobile 's Advantages
Released 3 years and 1 months late
Boost Clock has increased by 28% (1493MHz vs 1163MHz)
Lower TDP (18W vs 75W)