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 move ...

flip-chip Flip chip, also known as controlled collapse chip connection or its abbreviation, C4, is a method for interconnecting dies such as semiconductor devices, IC chips, integrated passive devices and microelectromechanical systems (MEMS), to externa ...

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) rather than the integrated circuit. An LGA can be electrically connected to a ...

(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 cen ...

Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the developers of the x86 seri ...

for their CPUs based on the

Sandy Bridge Sandy Bridge is the codename for Intel's 32 nm microarchitecture used in the second generation of the Intel Core processors (Core i7, i5, i3). The Sandy Bridge microarchitecture is the successor to Nehalem and Westmere microarchitecture. ...

(2nd Gen) and Ivy Bridge (3rd Gen) microarchitectures. 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. Its incompatible successor is LGA 1155. The last processors supporting it ceased production in 2011. LGA 1156, along with LGA 1366, were designed ...

(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 upgrade to its predecessors, Windows 2000 for high-end and ...

Windows Server 2003 Windows Server 2003 is the sixth version of Windows Server operating system produced by Microsoft. It is part of the Windows NT family of operating systems and was released to manufacturing on March 28, 2003 and generally available on April 24, 2 ...

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, which was released five years before, at the time being the longest time span between successive releases of ...

, and

Windows Server 2008 Windows Server 2008 is the fourth release of the Windows Server operating system produced by Microsoft as part of the Windows NT family of the operating systems. It was released to manufacturing on February 4, 2008, and generally to retail on F ...

. 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 secure boot with support in some later boards.

Heatsink

The 4 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 1155, also called Socket H2, is a zero insertion force flip-chip land grid array (LGA) CPU socket designed by Intel for their CPUs based on the Sandy Bridge (2nd Gen) and Ivy Bridge (3rd Gen) microarchitectures. It is the successor of L ...

LGA 1151 LGA 1151, also known as Socket H4, 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 Lake CPUs, ...

and

LGA 1200 LGA 1200 is a zero insertion force flip-chip land grid array (LGA) socket, compatible with Intel desktop processors Comet Lake (10th gen) and Rocket Lake (11th-gen) desktop CPUs, which was released in April 2020. LGA 1200 is designed as a repla ...

. 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. Sandy Bridge based processors 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

A PCGHX user wrote an article on the 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 specification for accessing a computer's non-volatile storage media usually attached via PCI Express (PCIe) bus. The ...

protocol, instead of the

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

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

Notes

References

External links

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