CRU / Dell P2720D / pixel clock / add monitor data

Hi, my first post here :-)


I have a couple of questions regarding CRU:


a) For my Dell P2720D CRU reports a maximum pixel clock of 280 MHz.
To achieve 74Hz instead of 60Hz I created a custom resolution via CRU and succeeded, but the pixel clock value is 291.29 MHz now!
Is this harmful to the monitor, could there be any damage like reducing the life-span of this monitor?


b) I'd like to see the specifications of another monitor that I do not own - the Dell U2719D (V rate, H rate, and especially: max pixel clock, because I do not find the maximum pixel clock for this monitor anywhere!)

Is it possible to add a "foreign" monitor to the list of monitors (top left drop-down list in CRU)? The list shows all the monitors that I had installed before but I cannot add a new monitor that I do not own even if I install its driver.
Is there a way to get additional monitors into this list?



Many thanks