Intel CPU Core i7 2600K Sandy Bridge perspective

LGA 1155, also called Socket H2, is a

zero insertion force Zero insertion force (ZIF) is a type of IC socket or electrical connector that requires very little (but not literally zero) force for insertion. With a ZIF socket, before the IC is inserted, a lever or slider on the side of the socket is m ...

flip-chip Flip chip, also known as controlled collapse chip connection or its abbreviation, C4, is a method for interconnecting Die (integrated circuit), dies such as semiconductor devices, Integrated circuit, IC chips, integrated passive devices and micr ...

land grid array The land grid array (LGA) is a type of surface-mount packaging for integrated circuits (ICs) that is notable for having the pins on the socket (when a socket is used) — as opposed to pins on the integrated circuit, known as a '' pin grid array' ...

(LGA)

CPU socket In computer hardware, a CPU socket or CPU slot contains one or more mechanical components providing mechanical and electrical connections between a microprocessor and a printed circuit board (PCB). This allows for placing and replacing the centr ...

Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California, and Delaware General Corporation Law, incorporated in Delaware. Intel designs, manufactures, and sells computer compo ...

for their CPUs based on the

Sandy Bridge Sandy Bridge is the List of Intel codenames, codename for Intel's 32 nm process, 32 nm microarchitecture used in the second generation of the Intel Core, Intel Core processors (Intel Core i7, Core i7, Intel Core i5, i5, Intel Core i3, i3). The Sa ...

(second generation core) and Ivy Bridge (third generation)

microarchitecture In electronics, computer science and computer engineering, microarchitecture, also called computer organization and sometimes abbreviated as μarch or uarch, is the way a given instruction set architecture (ISA) is implemented in a particular ...

s. Introduced in 2011, it is the successor of

LGA 1156 LGA 1156 (land grid array 1156), also known as Socket H 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, alon ...

(known as ''Socket H'') and was itself succeeded by

LGA 1150 LGA 1150, 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, Broadwe ...

in 2013. Along with selected variations of

LGA 2011 LGA 2011, also called ''Socket R'', is a CPU socket by Intel released on November 14, 2011. It launched along with LGA 1356 to replace its predecessor, LGA 1366 (Socket B) and LGA 1567. While LGA 1356 was designed for dual-processor or ...

socket, it was the last Intel socket to fully support

Windows XP Windows XP is a major release of Microsoft's Windows NT operating system. It was released to manufacturing on August 24, 2001, and later to retail on October 25, 2001. It is a direct successor to Windows 2000 for high-end and business users a ...

Windows Server 2003 Windows Server 2003, codenamed "Whistler Server", is the sixth major version of the Windows NT operating system produced by Microsoft and the first server version to be released under the Windows Server brand name. It is part of the Windows NT ...

Windows Vista Windows Vista is a major release of the Windows NT operating system developed by Microsoft. It was the direct successor to Windows XP, released five years earlier, which was then the longest time span between successive releases of Microsoft W ...

, and

Windows Server 2008 Windows Server 2008, codenamed "Longhorn Server" (alternatives: "Windows Vista Server" or "Windows Server Vista"), is the seventh major version of the Windows NT operating system produced by Microsoft to be released under the Windows Server b ...

. LGA 1155 has 1155 protruding pins to make contact with the pads on the processor. The pins are arranged in a 40×40 array with a 24×16 central void and additional 61 omitted pins (two adjoining the central void, six in each of the four corners, and 35 in groups around the perimeter), yielding the 1600 − 384 − 61 = 1155 pin count. Processors for LGA 1155 and LGA 1156 sockets are not compatible with each other since they have different socket notches. LGA 1155 also marked the beginning of

UEFI secure boot Unified Extensible Firmware Interface (UEFI, as an acronym) is a Specification (technical standard), specification for the firmware Software architecture, architecture of a computing platform. When a computer booting, is powered on, the UEFI ...

with support in some later boards.

Heatsink

The four holes for fastening the heatsink to the motherboard are placed in a square with a lateral length of 75mm for Intel's sockets

, LGA 1155,

LGA 1151 LGA 1151, 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 and Kaby L ...

and

LGA 1200 LGA 1200, also known as Socket H5, is a zero insertion force flip-chip land grid array (LGA) CPU socket, socket, compatible with Intel desktop Central processing unit, processors Comet Lake (10th gen) and Rocket Lake (11th-gen) desktop CPUs, whic ...

. Cooling solutions should therefore be interchangeable. Cooling systems are compatible between LGA 1155 and LGA 1156 sockets, as the processors have the same dimensions, profile and construction, and similar levels of heat production.

''Sandy Bridge'' family of chipsets

Sandy Bridge chipsets, except B65, Q65 and Q67, support both Sandy Bridge and Ivy Bridge CPUs through a BIOS upgrade. With third-party BIOSes like

Coreboot coreboot, formerly known as LinuxBIOS, is a software project aimed at replacing proprietary firmware (BIOS or UEFI) found in most computers with a lightweight firmware designed to perform only the minimum number of tasks necessary to load and r ...

, Ivy Bridge processors can be used on those chipsets as well. Processors based on Sandy Bridge officially support up to DDR3-1333 memory, however in practice speeds up to DDR3-2133 have been tested to work successfully. The H61 chipset only supports one double-sided DIMM Memory module (RAM module) per memory-channel and therefore is limited to 16GB instead of the 32GB like the others support. On H61-based motherboards with four DIMM slots, only four single-sided DIMMs can be installed.

''Ivy Bridge'' family of chipsets

All Ivy Bridge chipsets and motherboards support both Sandy Bridge and Ivy Bridge CPUs. Ivy Bridge based processors will officially support up to DDR3-1600, up from DDR3-1333 of Sandy Bridge. Some consumer Ivy Bridge chipsets will also allow overclocking of K-series processors.

NVMe support

A user by the name of Mephisto_xD wrote an article on that website describing how to take UEFI modules from some Z97 motherboards and use them with an Z77-motherboard to make the latter support booting from an SSD using the

NVM Express NVM Express (NVMe) or Non-Volatile Memory Host Controller Interface Specification (NVMHCIS) is an open, logical-device interface functional specification, specification for accessing a computer's non-volatile storage media usually attached via th ...

protocol, instead of the

AHCI The Advanced Host Controller Interface (AHCI) is a technical standard defined by Intel that specifies the Hardware register, register-level interface of Serial ATA (SATA) host controllers in a non-implementation-specific manner in its Intel chip ...

protocol. That article claims, the Z97 motherboards were the first to officially and fully support the NVMe protocol. The modifications described also work with P67, B75 and other chipset motherboards.

Notes

References

External links

Intel desktop processor integration overview (LGA115x)
{{Intelsock Intel CPU sockets