NVIDIA Quadro P620 Mobile 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (96.13GB/s vs 40.10GB/s)
256 additional rendering cores
NVIDIA Quadro P500 Mobile 's Advantages
Boost Clock has increased by 5% (1518MHz vs 1443MHz)
Lower TDP (18W vs 40W)