In current beta releases of raptor lake, there are two cpus with lga 3647 sockets, and both of them do not fit into alder lake's socket. However, these two cpus have different socket designs, which means they will fit on alder lake's socket. If raptor lake follows the same pattern as alder lake, it might use lga 3647 or lga 3647+ sockets, and both of them would fit into alder lake's socket. It is also possible that raptor lake will use lga 3647+ sockets, but it will have a different socket design than alder lake. It is also unclear whether raptor lake will use lga 3647 sockets or lga 3647+ sockets. However, if lga 3647+ sockets are used, then raptor lake should fit into alder lake's socket. Since alder lake pins are different from lga 1151 pins, raptor lake will fit into alder lake's socket only if the pins are compatible.