Does anyone know if it's possible to run a non-Mac native NVIDIA graphics card using the NVIDIA web drivers while also having the stock Radeon 5770 graphics card installed in a 2012 Mac Pro? It seems like having the stock card in the computer as well would get around the "no boot screen" issue with the NVIDIA cards that use web drivers. I plan on installing a Quadro P4000 card in my Mac Pro so I can run multiple 5K displays and since it's a single width card with fairly low power consumption, it seems like it could easily be installed alongside the stock Radeon 5770 as long as there isn't anything preventing them from working simultaneously. Is anyone running a Mac native graphics card with an NVIDIA card relying on web drivers? Will it work? Thanks!