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2017 27" iMac with external Dell U3818DW?
- Thread starter udflyer
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I have a U3818DW but I use it with a 2013 Mac Pro, no issues. I'd go for it, it's a great display. Prior to that, I had a Late 2015 27" iMac and a U3415W, and that worked fine too. The 3415 was a perfect match in terms of vertical size (physical screen height) but it was obvious that it was non-Retina next to the 5k display of my iMac 
Anyone by chance running the Dell U3818DW monitor as an external with their iMac?
May be a bit extreme
U3818DW on sale for $879 and I was thinking about it.
Did you get the monitor in the end? Thinking the same
I have a U3818DW but I use it with a 2013 Mac Pro, no issues. I'd go for it, it's a great display. Prior to that, I had a Late 2015 27" iMac and a U3415W, and that worked fine too. The 3415 was a perfect match in terms of vertical size (physical screen height) but it was obvious that it was non-Retina next to the 5k display of my iMac
What is the refresh rate you achieve using the U3818DW with your mac pro? Is it 30Hz?