NVIDIA Quadro M2000 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (105.8GB/s vs 80.13GB/s)
256 additional rendering cores
NVIDIA Quadro P620 's Advantages
Released 1 years and 10 months late
Boost Clock has increased by 16% (1354MHz vs 1163MHz)
Lower TDP (40W vs 75W)