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The land grid array is a packaging technology with a grid of contacts, 'lands', on the underside of a package. The contacts are to be connected to a grid of contacts on the PCB. Not all rows and columns of the grid need to be used. The contacts can either be made by using an LGA socket, or by using solder paste. [2]
CPUs with an LGA (land grid array) package are inserted into the socket, the latch plate is flipped into position atop the CPU, and the lever is lowered and locked into place, pressing the CPU's contacts firmly against the socket's lands and ensuring a good connection, as well as increased mechanical stability.
LGA 1156 (land grid array 1156), also known as Socket H [2] [3] or H1, is an Intel desktop CPU socket. The last processors supporting the LGA 1156 ceased production in 2011. It was succeeded by the mutually incompatible socket LGA 1155. LGA 1156, along with LGA 1366, were designed to replace LGA 775.
LGA 775 (land grid array 775), also known as Socket T, is an Intel desktop CPU socket.Unlike PGA CPU sockets, such as its predecessor Socket 478, LGA 775 has no socket holes; instead, it has 775 protruding pins which touch contact points on the underside of the processor (CPU).
LGA 1150, [1] also known as Socket H3, is a zero insertion force flip-chip land grid array (LGA) CPU socket designed by Intel for CPUs built on the Haswell microarchitecture. This socket is also used by the Haswell's successor, Broadwell microarchitecture. [2] It is the successor of LGA 1155 and was itself succeeded by LGA 1151 in 2015.
LGA 1151, [1] also known as Socket H4, is a type of zero insertion force flip-chip land grid array (LGA) socket for Intel desktop processors which comes in two distinct versions: the first revision which supports both Intel's Skylake [2] and Kaby Lake CPUs, and the second revision which supports Coffee Lake CPUs exclusively.
LGA 1200, also known as Socket H5, is a zero insertion force flip-chip land grid array (LGA) socket, compatible with Intel desktop processors Comet Lake (10th gen) and Rocket Lake (11th-gen) desktop CPUs, which was released in April 2020. [1] [2] LGA 1200 is designed as a replacement for the LGA 1151 (known as Socket H4).
The revealed socket Contacts of the Intel Core Ultra 9 285K (left; LGA 1851), and i9-14900K (right, Socket 1700). LGA 1851 (codename Socket V1) is a land grid array CPU socket designed by Intel for Meteor Lake-PS and Arrow Lake-S desktop processors, released in October 24, 2024.