Trying to add 1080p 48Hz.

[ToastyX]

Horizontal scan rate (kHz) is the number of lines per second including blanking.
Pixel clock (MHz) is the number of pixels per second including blanking.
Blanking is the period between each line and frame.
Here are some other terms: https://www.monitortests.com/blog/timing...explained/

CRU can fill in the timing parameters for you, so try the timing presets first. The monitor might not accept 48 Hz. 72 Hz is more likely to work. Intel GPUs only have single-link DVI, and that monitor only uses single-link DVI anyway, so the driver will ignore resolutions beyond 165 MHz pixel clock. "Exact reduced" timing will keep the pixel clock under 165 MHz for 1920x1080 @ 72 Hz. If that doesn't work, you might have to increase the horizontal blanking. You'll have to play around and see what works. Timing standards are pretty arbitrary, so they're not important as long as it works.