- Dec 17, 2019
- Dell 9020 (SFF)
- HD 4600 | WX 4100
Should work theoretically but I've never owned that card or a 5K monitor. If it can power four 4K displays you'd think it should have no problems. You might search in some Mac Pro 2010/12 forums to see if anyone has done this with a 5K monitor. The Late 2014 iMac was 5K but Apple accomplished that with two streams from DP 1.2. The WX4100 has DP 1.4 which is 8K capable. Since the drivers for the 4100 are native in macOS my guess would be that it will work quite well if the monitor you pick has DP 1.4 inputs. It might require that you use an iMac SMBIOS that is newer than what the guide suggests and works for 4K monitors. Will take some experimenting on your part.
4K/5K Display Support
Drive a single, 5K (5120x2880 pixel resolution) display, or up to four, 4K displays.
I wonder if the discontinued HP monitor would be a better bet then.
As an it's older monitor with DP1.2, it similarly relies on two 1.2 streams. I imagine two 1.4 streams should be backwards compatible with 1.2, but I'm not sure.