The Socket Behind Intel Core Ultra Desktops

LGA 1851 is the desktop socket Intel introduced with the Core Ultra 200S range, and every board on this page is built around it. It accepts those processors and the Core Ultra 200S Plus refresh that followed them, and nothing older.

Choosing one is mostly a question of what the socket imposes and what the board adds on top. DDR5 is the only memory type it will take, the cooler mounting carries over unchanged from the previous socket, and how much tuning you get is set by the chipset badge. Everything else is the vendor's choice and varies from model to model within the same tier.