2010 Mac Pro, Sapphire Radeon HD 7950 Mac edition and Dell 4K monitor
I have a Mid 2010 Mac Pro 3.33GHz model with an AMD Sapphire Radeon HD 7950 Mac edition graphics card installed, running Yosemite 10.10.5.
My 30" Apple Cinema HD Display (connected via Dual-DVI) is starting to act flakey (probably a problem with the bezel buttons on the right side; chronicled elsewhere on this site by others).
I started thinking about buying that new Dell 31.5" 4K monitor to replace it with, using the 2 mini DisplayPort ports on the Sapphire card.
I've seen a few older posts implying that the card has problems with other 4K displays using mini DisplayPort running older (like 10.10.2) versions of Yosemite.
Just looking to see if anyone's had more recent experience with this configuration and whether or not it's working nowadays with a more recent OS. Would hate to buy the Dell and then have to ship it back because the 4K setup didn't work.
Mac Pro, OS X Yosemite (10.10.5), 6-core, 24 GB RAM, 4x2 TB/RAID card