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LGA 1366

From Wikipedia, the free encyclopedia
CPU socket for Intel processors

Socket B
TypeLGA-ZIF
Chip form factorsFlip-chip
Contacts1366
FSB protocolIntel QuickPath Interconnect
FSB frequency1× to 2×QuickPath
Processor dimensions45.07 mm × 42.57 mm[1]
1,912.5 mm²
ProcessorsIntel Core i7 (9xx series)
Intel Xeon (35xx, 36xx,
55xx, 56xx series)
PredecessorLGA 775 (high-end desktops and low-end servers)
LGA 771 (low- and mid-end servers)
SuccessorLGA 2011 (desktops, low- and mid-end servers)
LGA 1356 (low-end, dual-processor servers)
Memory supportDDR3

This article is part of theCPU socket series

LGA 1366 (land grid array 1366), also known asSocket B,[2][3] is anIntelCPU socket. This socket supersedes Intel'sLGA 775 (Socket T) in the high-end and performance desktop segments. It also replaces the server-orientedLGA 771 (Socket J) in the entry level and is superseded itself byLGA 2011. This socket has 1,366 protruding pins which touch contact points on the underside of the processor (CPU)[4] and accesses up to three channels of DDR3 memory via the processor's internal memory controller.

Socket 1366 (Socket B) usesIntel QuickPath Interconnect (QPI) to connect the CPU to a reduced-functionnorthbridge that serves mainly as a PCI-Express controller. A slowerDMI is used to connect Intel's most recentnorthbridge and southbridge components. By comparison, Intel'sLGA 1156 (Socket H) moves the QPI link and PCI-Express controller onto the processor itself, using DMI to interface a single-component "chipset" (now calledPCH) that serves traditionalsouthbridge functions. The difference in pin number is mostly a reflection of the number of memory channels served.

In November 2008, Intel releasedCore i7, which was the first processor requiring this socket.

LGA 1366 socket and processors were discontinued sometime in early 2012,[5] having been superseded by theLGA 2011 andLGA 1356 socket, on 14 November 2011, supporting Sandy Bridge E-series processors. The accompanying LGA 1156 was discontinued at the same time, which was replaced byLGA 1155.

Socket B mechanical load limits

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Socket B processors have the following mechanical maximum load limits which should not be exceeded during heatsink assembly, shipping conditions, or standard use. Load above those limits will crack the processor die and make it unusable. The limits are included in the table below.

LocationDynamicStatic
IHS Surface890N (200lbf; 90kp)266 N (60 lbf; 27 kp)

Processors using this socket have a lower static load limit than previous models usingLGA 775. Available reference heat sinks include circular design and heatpipe design.[6]

Supported chipsets

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The chipsets that support LGA 1366 are Intel'sX58 (desktop) and3400, 3420, 3450, 5500, 5520 and 7500 (server).

See also

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References

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  1. ^"Intel Core i7 Processor Datasheet"(PDF).Intel. RetrievedNovember 14, 2022.
  2. ^"Socket Transition Guidance".Intel. Archived fromthe original on May 8, 2015. RetrievedDecember 17, 2010.
  3. ^"Intel Core i7 & i5 Compatibility Sheet"(PDF).Intel. Archived fromthe original(PDF) on December 2, 2010. RetrievedNovember 14, 2022.
  4. ^"New P4 Socket Type LGA 775 (Socket T)".ASI Support. Archived fromthe original on December 13, 2007. RetrievedMarch 14, 2007.
  5. ^Knight, Shawn (December 8, 2011)."Intel to discontinue LGA 1366 and LGA 1156 processors in 2012".TechSpot. RetrievedDecember 13, 2011.
  6. ^"Intel® Core™ i7-900 Desktop Processor Series and LGA1366 Socket Thermal and Mechanical Design Guide"(PDF).Intel. March 2011. p. 28. Archived fromthe original(PDF) on February 7, 2016. RetrievedNovember 14, 2022.
Desktop sockets
Slot
PGA
  • 370 (1998–2001)
  • 423 (W 2000–2001)
  • 478 (N 2001–2004)
LGA
Mobile sockets
Server sockets
Xeon processors
Slot
PGA
  • 603 (2001–2004)
  • 604 (2002–2007)
LGA
Itanium processors
Pre-Pentium IIPGA Sockets
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