In 2009, Intel introduced a new socket types for its processors to market, the Socket 1156. This has the type LGA as its predecessor LGA 775. This socket can be found in Intel Core i3, Core i5 and Core i7 CPUs. The socket supports clock frequencies up to 3.6 GHz and has 1156 contact surfaces. The memory controller as well as a PCIe controllers are integrated on the processor, whereby the Northbridge is superfluous. It only still needs a slightly modified Southbridge, which is called PCH (=Platform Controller Hub). In 2012, the production of the socket 1156 and its associated processors was discontinued. This socket type was replaced from the Socket 1155.