NVIDIA Quadro K6000 SDI 's Advantages
More VRAM (12GB vs 2GB)
Larger VRAM bandwidth (288.4GB/s vs 80.13GB/s)
2368 additional rendering cores
NVIDIA Quadro P620 's Advantages
Released 4 years and 7 months late
Boost Clock1354MHz
Lower TDP (40W vs 239W)