Socket G2, also known as rPGA 988B (there are Socket G/rPGA 989 sockets that can take Socket G2/rPGA 988B), is Intel's CPU socket used with their line of mobile Core i7, the successor to the Core 2 line, and also with several mobile Core i5 and Core i3 processors. It is based on Intel's Sandy Bridge architecture. Its predecessor, socket G1 systems, can only run in dual-channel memory mode, as opposed to the triple-channel mode which is unique to the LGA-1366 platform (and subsequent Xeon sockets). They are also known as FCPGA988 socket processors.