NVIDIA Quadro P3000 Mobile 's Advantages
More VRAM (6GB vs 2GB)
Larger VRAM bandwidth (168.3GB/s vs 80.13GB/s)
768 additional rendering cores
NVIDIA Quadro P620 's Advantages
Released 1 years and 1 months late
Boost Clock has increased by 11% (1354MHz vs 1215MHz)
Lower TDP (40W vs 75W)