I got the new Samsung 4K UHD monitor. Went from 1920 x 1200 (2,304,000 pixels) 24″ monitor to 3840 x 2160 (8,294,400 pixels) 28″ monitor.
For example, in Excel on my old monitor I can see 29 columns (AC) to 43 rows or 1,305 cells. Now I can see 59 columns (BG) to 93 rows or 5,487 cells.
Games and videos in 4K look awesome.