Staggered Pin Grid Array SPGA <hardware> (SPGA) A style of {integrated circuit} socket or pin-out with a staggered grid of pins around the edge of the socket, positioned as several squares, one inside the other. SPGA is commonly used on {motherboards} for {processors}, e.g. {Socket 5}, {Socket 7} and {Socket 8}. See also {PGA}. [Better description?] (1999-08-04)