NVIDIA Quadro P4200 Mobile 's Advantages
Released 3 years and 7 months late
Boost Clock has increased by 47% (1647MHz vs 1124MHz)
More VRAM (8GB vs 2GB)
Larger VRAM bandwidth (192.3GB/s vs 28.80GB/s)
1920 additional rendering cores
NVIDIA Quadro K620 's Advantages
Lower TDP (45W vs 100W)