NVIDIA Quadro NVS 440 PCIe x16 's Advantages
Lower TDP (31W vs 320W)
NVIDIA Quadro Plex 1000 Model IV 's Advantages
Released 2 years and 5 months late
More VRAM (1536GB vs 128GB)
Larger VRAM bandwidth (76.80GB/s vs 8.000GB/s)
128 additional rendering cores