NVIDIA Quadro P400 's Advantages
Released 2 years and 7 months late
Boost Clock has increased by 11% (1252MHz vs 1124MHz)
Lower TDP (30W vs 68W)
NVIDIA Quadro K2200 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (80.19GB/s vs 32.06GB/s)
384 additional rendering cores