Two 27-inch monitors on a shallow desk - when arms are the fix

How this is calculated

Each 27-inch native stand consumes about 8-9 inches (20-23 cm) of depth from the desk edge. On a 24-inch (61 cm) deep desk that leaves roughly 15 inches (38 cm) of keyboard surface and puts the 1440p panel at about 24 inches (61 cm), the close edge of its comfort range. Clamp a VESA 100x100 arm to the rear edge and the panels slide back 8-9 inches, which moves your eyes to 28 inches (71 cm) or more. One check before you buy: most clamp arms want a desktop at least 0.4 inches (10 mm) thick and have a lip clearance of a few inches, and some very shallow desks have a rear cable tray that blocks the clamp.

Verdict

On a 24-inch (61 cm) deep desk the two 27-inch native stands consume 8-9 inches (20-23 cm) each, leaving about 15 inches (38 cm) of keyboard surface and putting the 1440p panel at roughly 24 inches (61 cm), the close edge of comfortable. A VESA 100x100 clamp arm fixes it by sliding the panels back to the rear edge, restoring 28 inches (71 cm) or more of viewing distance without a deeper desk. The width is easy since two 27-inch panels angled at 15 degrees span about 45.4 inches (115 cm) against a 55-inch (140 cm) top. The pre-purchase check is clamp compatibility, because most arms want a desktop at least 0.4 inches (10 mm) thick and a few inches of rear lip clearance, and a rear cable tray can block the clamp entirely.