Mac Pro mid 2012 graphics card upgrade to 4K display
I asked this question in another post: https://discussions.apple.com/thread/250034259 but I was unclear in defining what I truly needed. Here is a (I hope) a better attempt.
I need a new graphics card, one that will run at least 4K on my older mid 2012 Mac Pro. I am trying to have the same visual real estate that I have now spread across two 30" displays on one larger display and at the same size and clarity. Right now I am running an Apple Cinema HD Display (2560 x 1600) and an HP ZR30w (2560 x 1600). This new monitor needs to be able to display all the same graphics, mixing board, editing window, transport window, playback controls ... everything that one of my professional DAWs - Avid's Pro Tools, Apple's Logic Pro, and MOTU's Digital Performer - run. The display needs a have a fast refresh rate as well as being sharp and clear - and sizable. It needs to be quiet as the Mac Pro Is situated in a recording studio -- the computer is in the room. I know that a regular TV will do me nothing. The card in my computer is presently an ATI Radeon HD 5870.
Is there anything out there that I can upgrade to? I looked at the "Mojave list" and I think that there must be some others that would work. Any recommendations? Anyone else do this successfully? Thanks!