1920 × 1200 vs 2560 × 1440
WUXGA against QHD 1440p, side by side.
2560×1440 renders 1,382,400 more pixels than 1920×1200 — 60% more. They differ in shape too: 1920×1200 is 16:10 while 2560×1440 is 16:9, so windows and video fit differently.
A cross-shape question, usually laptop versus monitor: 1920×1200 is the premium-laptop standard, QHD the desktop one. QHD's 60% extra pixels win on sheer workspace and its 16:9 shape fills with video cleanly; 16:10 counters with taller documents at any given width. On a 24-inch external display either is sharp — at 27 inches, QHD is the safer pick.