A 48x24 desk offers just enough space for your 27-inch monitor and gaming gear...

https://griffinsnicechat.theglensecret.com/how-do-i-make-a-small-gaming-corner-feel-bigger-without-remodeling

A 48x24 desk offers just enough space for your 27-inch monitor and gaming gear without feeling cramped. Keeping at least 36 inches clearance behind your chair means easy movement and comfort during long sessions