A 48x24-inch desk gives you enough space for your keyboard, mouse, and a...

https://camilassuperwords.readspirex.com/posts/what-are-the-actual-dimensions-of-a-27-inch-monitor

A 48x24-inch desk gives you enough space for your keyboard, mouse, and a 27-inch monitor without feeling cramped. Pair that with at least 36 inches of clearance behind your chair to move comfortably during those long gaming sessions