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). The socket had an unusually long life span, lasting 7 years until the last processors supporting it ceased production in 2011. The socket was superseded by the LGA 1156 (Socket H) and LGA 1366 (Socket B) sockets. LGA 775 processors (some of the processors listed here might not work on newer Intel based chipsets) Pentium 4 Pentium 4 Extreme Edition Pentium D Celeron/Celeron D Pentium Dual-Core Pentium Extreme Edition Core 2 Duo/Core 2 Quad Heatsink design For LGA 775, the distance between the screw-holes for the heatsink is 72 mm. Such heat-sinks are not interchangeable with heatsinks for sockets that have a distance of 75 mm, such as LGA 1156, LGA 1155, LGA 1150, LGA 1151 and LGA 1200. Chipsets LGA 775 was the last Intel socket for desktops for which third-party companies manufactured chipsets. Nvidia was the last third-party manufacturer of LGA 775 chipsets (its final product was MCP7A family, marketed as GeForce 9300/9400, launched in October 2008), as other third-parties discontinued their products earlier. All chipsets for superseding sockets were exclusively designed and manufactured by Intel, a practice later also adopted by AMD when they first launched APUs in 2011 (Socket AM3+ processors, also first launched in 2011, were usually paired with AMD chipsets, but some motherboards using third-party chipsets were also manufactured, usually with Nvidia chipsets, as Socket AM3+ design directly derived from earlier Socket AM3 design). Intel Core 2 Chipsets Lakeport: 945PL / 945P / 945G / 945GC / 945GZ / 955X / 946PL / 946GZ P Broadwater: i955X / i946 / 946GZ / PL / 965 / i975 / Q965 / P965 / G965 / Q963 / i975X Bearlake: X35 / P35 / Q35 / G35 / P33 / G33 / Q33 / P31 / G31 / X38 / X48 Eaglelake: P45 / P43 / G45 / G43 / G41 / B43 / Q43 / Q45945PLS3 SiS SiS 649 649FX 655 656 656FX 662 671 671FX 671DX 672 VIA PT800 PM800 PT880 PM880 P4M800 P4M800 Pro PT880 Pro PT880 Ultra PT894 PT894 Pro P4M890 PT890 P4M900 PT880 Pro also supports AGP and PCI-Express at the