LGA 771

Socket J (LGA 771)
Release dateMay 16, 2006; 18 years ago (2006-05-16)
Designed byIntel
Manufactured byIntel
TypeLand Grid Array (LGA)
Chip form factorsFlip chip land grid array
Contacts771
FSB protocolAGTL+
FSB frequency667 MT/s, 1066 MT/s, 1333 MT/s, 1600 MT/s
Voltage rangeVaries (1,3625V max)
Processor dimensions37.5 mm x 37.5 mm
ProcessorsIntel Celeron 445
Intel Core 2 Duo E6x05
Intel Dual-Core Xeon E/X/L 50xx–52xx
Intel Quad-Core Xeon X 33xx
Intel Quad-Core Xeon E/X/L 53xx–54xx
Intel Core 2 Extreme QX9775
PredecessorSocket 604
VariantLGA 775 (Socket T)
SuccessorLGA 1366
Memory supportDDR2, DDR3

This article is part of the CPU socket series

LGA 771, also known as Socket J, is a CPU interface introduced by Intel in 2006.[1] It is used in Intel Core microarchitecture and NetBurst microarchitecture (Dempsey) based DP-capable server processors, the Dual-Core Xeon is codenamed Dempsey, Woodcrest, and Wolfdale and the Quad-Core processors Clovertown, Harpertown, and Yorkfield-CL. It is also used for the Core 2 Extreme QX9775, and blade servers designated under Conroe-CL.

It was succeeded by LGA 1366 for the Nehalem-based Xeon processors.

  1. ^ "Intel® Socket Test Technology for LGA771". Intel. Retrieved June 29, 2016.