Since support is coming with OSX High Sierra for an external graphics card, I am planning to extend my life on my mid 2015 macbook pro by doing such an upgrade.
And, since I've acquired a 10-bit monitor (BenQ SW320), the graphics card need to be able to produce true 10-bit colors for photoshop over a displayport cable.
A while back, only FirePro or Quadro graphics cards produced 10-bit colors, is that still true, or is there other (read cheaper) alternatives out there? It's difficult to google this topic since there is so little information regarding true 10-bit color.