LGA 1356

LGA 1356, also called Socket B2, is an Intel microprocessor socket released in Q1 2012 with 1356 Land Grid Array pins. It launched alongside LGA 2011 to replace its predecessor, LGA 1366 (Socket B) and LGA 1567.^[1] It's compatible with Intel Sandy Bridge-EN (also known as Romley-EN) and Ivy Bridge-EN microprocessors.

LGA 1356

Type	LGA
Contacts	1356
FSB protocol	Intel QuickPath Interconnect
FSB frequency	1× QuickPath
Processors	Sandy Bridge-EN Ivy Bridge-EN
Predecessor	LGA 1366, LGA 1567
Successor	LGA 2066, LGA 3647
Memory support	DDR3
This article is part of the CPU socket series

Xeon E5-2407

Xeon E5-2407, bottom view

Description

LGA 1356 has 1356 protruding pins to make contact with the pads on the processor. Processors of LGA 1356 and LGA 1366 sockets are not compatible with each other since they have different socket notches.

While LGA 2011 was designed for high-end desktops and high-performance servers, LGA 1356 was designed for the dual-processor and low-end segment of the server market.

It supports 64-bit wide DDR3 triple channel memory, and equipped with 1 Intel QPI connection and 24 PCI Express lanes. Meanwhile LGA 2011 supports quad channel memory, 2 QPI connections and 40 PCIe lanes. Socket LGA 1155, desktop socket of the same generation supports dual channel memory. Each DDR3 channel can support one more DIMM (only applicable to DDR3 and not DDR3-L).^[2]

Plans were leaked in early 2011, with estimated releases in the first quarter of 2012.^[3] In September 2011, releases were estimated to be at the end of the first quarter of 2012.^[4]

Physical design

Socket B2 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.

Location	Dynamic	Static
IHS Surface	890 N (200 lbf)	266 N (60 lbf)

Processors using this socket have the same static load limit as previous models using LGA 1366 (Socket B).^[5]

Compatible processors

Sandy Bridge-EN

Main article: Sandy Bridge-EN

Socket	Model		Cores (threads)	L3Cache	CPU clock rate		Interface	Supported memory	TDP	Release date	Price (USD)
					Standard	Turbo
LGA 1356 Dual Socket	Xeon E5	2470 v2	10 (20)	25MB	2.4GHz	3.2GHz	1× QPI DMI 2.0 24× PCI-E 3.0	3× DDR3-1600	95W	Q1 2014	$1440
		2470	8 (16)	20MB	2.3GHz	3.1GHz				May 14, 2012
		2450			2.1GHz	2.9GHz					$1106
		2450L			1.8GHz	2.3GHz			70W
		2450Lv2	10 (20)	25MB	1.7GHz	2.1GHz			60W	Q1 2014	$1219
		2448L	8 (16)	20MB	1.8GHz	2.1GHz			70W	May 14, 2012	$1151
		2449L			1.4GHz	1.8GHz			50W		OEM
		2440	6 (12)	15MB	2.4GHz	2.9GHz		3× DDR3-1333	95W		$834
		2430			2.2GHz	2.7GHz					$551
		2420			1.9GHz	2.4GHz					$388
		2430L			2.0GHz	2.5GHz			60W		$662
		2428L			1.8GHz	2.0GHz					$628
		2418L	4 (8)	10MB	2.0GHz	2.1GHz			50W		$387
		2407	4 (4)		2.2GHz	N/A		3× DDR3-1066	80W		$250
		2403			1.8GHz						$192
LGA 1356		1428L	6 (12)	15MB	1.8GHz			3× DDR3-1333	60W		$395
		1410	4 (8)	10MB	2.8GHz	3.2GHz			80W		N/A
	Pentium	1407	2 (2)	5MB	2.8GHz	N/A		3× DDR3-1066
		1403			2.6GHz
		1405			1.2GHz	1.8GHz			40W	2012-08	$143

Ivy Bridge-EN

Main article: Intel_Ivy_Bridge-based_Xeon_microprocessors § Ivy_Bridge-EN

See also

• List of Intel microprocessors
• LGA 1366