Heya
QuadroK4200 should be enough speed wise if You are willing to drop down CAD model accuracy and shading is biggest layouts.
If You are updating Your graphics card anyway, choice is Yours. If You run also 3D CAD softwares and/or do professional video editing, go for Quadro (and also if money is not an issue =)
Otherwise GeForce is more that enough. E.g. 1060 6GB is good Value / Speed option now.
Key is to have dedicated graphics card and fast enough processor to serve both simulation and graphics card.
In short:
Geforce: Gaming / 3D Apps, all around computing, multi monitor support)
Quadro: Certain Scientific and data calculations, CAD rendering, Professional-grade video production
Hope this helps