What ho one and all,

It has been many, many years since I bought my monitor, a Dell Ultrasharp 2007 WFPb. I have been happy with it for all uses, including and mainly photo editing ( I have a colorimeter to hopefuly, get things better than OK.) My computer (Dell Dimension 9200) is running W7 with 8gb of RAM and a Quadro P2000 GPU.

But now I need a new monitor and my searching is leaving me in a 'tear my hair out' state.

There are too many to choose from. What is USB-C when compared with the USB port on my current screen? What is DisplayPort and will my GPU support it?

What does 4k do that a 24" or 27" with 92ppi will not do? Would I need a better GPU for 4k?

I like the Dell UltraSharp, but just want something that works well for photo editing and will not break the bank. How does one decide on a Dell when there are so many versions (U2421E/U2422H/U2722DE/U2723QE, etc.) The 24 or 27 I unerstand. I guess the 21,22, or 23 is a newer model. But with is E ,H, DE, QE?

Grateful for some suggestions.

Thanks and toodle pip