That's an aspect ratio of 1.9:1 which is uncommon. Now I see that most 4K monitor resolutions are 3840x2160 so therefore the output and monitor do match and there is no scaling, etc.ĭCI native 4K, 4096x2160 as in high-end 4K computer monitors. So I thought the output resolution of the MBP did not match the monitor resolution. Based on above posts, I assumed 4096x2096 was the default 4K monitor resolution. What pixels are you referring to?ĭid so more reading and I think I understand. When it outputs at 3840x2160 does that mean that unused pixels are black (like letterboxing) or do they scale to the full monitor size / resolution? That display is just glorious.And by 'not as good' is just a difference between 50MPH and 55MPH. has the best deals on Computer Monitors Whether you need a Gaming Monitor with 144Hz refresh, an LED Monitor for your home office. Screen Size: 38 Inches Resolution: 4K UHD. Granted, the 3840x2160 does NOT look as good as the 5k iMac. Overall, Dell UltraSharp U3818DW is a great choice if youre looking for the best monitor for Macbook Pro. Why would it look any different? The new rMBP puts out a native resolution so it looks just like any other PC/Mac putting out the same resolution.