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

https://direct-wiki.win/index.php/How_Do_I_Plan_Space_for_a_Console_Setup_on_a_Desk%3F

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