Was it an HDMI display? The HDMI port of the Mac Pro 2013 only supports HDMI 1.4. To do 4K60 requires a DisplayPort to HDMI 2.0 adapter.I tried 4k around 2014 but I returned the monitor because of the low refresh rate, have they fixed that?
Tech specs say three dual cable 5K displays or six 1440p displays.Yes. Two 4K monitors at 60 Hz via DisplayPort.
There were also some cheap-ish 4K displays in 2013/2014 that were limited to 30 Hz, such as the Dell P2815Q or Seiki TVs.Was it an HDMI display?
Thanks for the updated info.Tech specs say three dual cable 5K displays or six 1440p displays.
https://support.apple.com/kb/sp697
Ouch. 30 hz is painful, what can you do with that...There were also some cheap-ish 4K displays in 2013/2014 that were limited to 30 Hz, such as the Dell P2815Q or Seiki TVs.
If it's for mostly static content, slideshows or videos, 30 Hz is fine. For anything else though...Ouch. 30 hz is painful, what can you do with that...