Many users require the use of a workstation graphics card as that is the only way to display 10-bit color in Photoshop. But will an NVIDIA Quadro or an AMD Radeon Pro video card give you the best performance for your dollar?
Premiere Pro CC 2018 Workstation GPU Performance
If your workflow depends on having 10-bit color support on your primary display, using a workstation graphics card is typically the only way to do so since most consumer cards do not support displaying 10-bit color. But do you really need a Quadro P6000 or can you use a much less expensive card like the Quadro P4000 or Radeon Pro WX 9100 without sacrificing very much performance?