NVIDIA Quadro P6000 's Advantages
Lower TDP (250W vs 295W)
NVIDIA Quadro NVS 440 PCIe x16 's Advantages
Released 6 years and 6 months late
Boost Clock has increased by 52% (2495MHz vs 1645MHz)
More VRAM (48GB vs 24GB)
Larger VRAM bandwidth (864.0GB/s vs 432.8GB/s)
2304 additional rendering cores