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Socket 7 is a physical and electrical specification for an 
x86
x86 (also known as 80x86 or the 8086 family) is a family of complex instruction set computer (CISC) instruction set architectures initially developed by Intel, based on the 8086 microprocessor and its 8-bit-external-bus variant, the 8088. Th ...
-style CPU socket on a personal computer motherboard
A motherboard, also called a mainboard, a system board, a logic board, and informally a mobo (see #Nomenclature, "Nomenclature" section), is the main printed circuit board (PCB) in general-purpose computers and other expandable systems. It ho ...
. It was released in June 1995. The socket supersedes the earlier Socket 5
Socket 5 was created for the second generation of Intel P5 (microarchitecture), P5 Pentium (brand), Pentium processors operating at speeds from 75 to 133 MHz as well as certain Pentium OverDrive and Pentium MMX processors with core voltage 3. ...
, and accepts P5 Pentium
Pentium is a series of x86 architecture-compatible microprocessors produced by Intel from 1993 to 2023. The Pentium (original), original Pentium was Intel's fifth generation processor, succeeding the i486; Pentium was Intel's flagship proce ...
microprocessor
A microprocessor is a computer processor (computing), processor for which the data processing logic and control is included on a single integrated circuit (IC), or a small number of ICs. The microprocessor contains the arithmetic, logic, a ...
s manufactured by 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 ...
, as well as compatibles made by Cyrix
Cyrix Corporation was a microprocessor developer that was founded in 1988 in Richardson, Texas, as a specialist supplier of floating point units for 286 and 386 microprocessors. The company was founded by Tom Brightman and Jerry Rogers. Ter ...
/IBM
International Business Machines Corporation (using the trademark IBM), nicknamed Big Blue, is an American Multinational corporation, multinational technology company headquartered in Armonk, New York, and present in over 175 countries. It is ...
, AMD
Advanced Micro Devices, Inc. (AMD) is an American multinational corporation and technology company headquartered in Santa Clara, California and maintains significant operations in Austin, Texas. AMD is a hardware and fabless company that de ...
, IDT and others. Socket 7 was the only socket that supported a wide range of CPUs from different manufacturers and a wide range of speeds.
Differences between Socket 5 and Socket 7 are that Socket 7 has an extra pin and is designed to provide dual split rail voltage, as opposed to Socket 5's single voltage. However, not all motherboard manufacturers supported the dual voltage on their boards initially. Socket 7 is backwards compatible; a Socket 5 CPU can be inserted and used on a Socket 7 motherboard.
Processors that used Socket 7 are the AMD K5
The K5 is AMDs first x86 processor to be developed entirely in-house. Introduced in March 1996, its primary competition was Intel's Pentium microprocessor. The K5 was an ambitious design, closer to a Pentium Pro than a Pentium regarding technic ...
and K6, the Cyrix 6x86
The Cyrix 6x86 is a line of sixth-generation, 32-bit x86 microprocessors designed and released by Cyrix in 1995. Cyrix, being a fabless company, had the chips manufactured by IBM and SGS-Thomson. The 6x86 was made as a direct competitor to Intel ...
and 6x86MX, the IDT WinChip
The WinChip series is a discontinued CPU electrical consumption, low-power Socket 7-based x86 central processing unit, processor that was designed by Centaur Technology and marketed by its parent company Integrated Device Technology, IDT.
Overvie ...
, the Intel P5 Pentium
Pentium is a series of x86 architecture-compatible microprocessors produced by Intel from 1993 to 2023. The Pentium (original), original Pentium was Intel's fifth generation processor, succeeding the i486; Pentium was Intel's flagship proce ...
(2.5–3.5 V, 75–200 MHz), the Pentium MMX (166–233 MHz), and the Rise Technology mP6.
Socket 7 typically uses a 321-pin (arranged as 19 by 19 pins) SPGA ZIF socket or the very rare 296-pin (arranged as 37 by 37 pins) SPGA LIF socket. The size is 1.95" x 1.95" (4.95 cm x 4.95 cm).
An extension of Socket 7, Super Socket 7
Super Socket 7, also referred to as Super 7, is a hardware-level extension of the Socket 7 Zero insertion force, ZIF socket specification for x86 processors. It was released in May 1998. Compatible motherboards and chipsets use a standard Socket 7 ...
, was developed by AMD for their K6-2 and K6-III processors to operate at a higher clock rate and use AGP.
Socket 7 and Socket 8
The Socket 8 CPU socket was used exclusively with the Intel Pentium Pro and Pentium II Overdrive computer processors. Intel discontinued Socket 8 in favor of Slot 1 with the introduction of the Pentium II and Slot 2 with the release ...
were replaced by Slot 1
Slot 1 refers to the physical and electrical specification for the connector used by some of Intel's microprocessors, including the Pentium Pro, Celeron, Pentium II and the Pentium III. Both single and dual processor configurations were impl ...
and Slot 2 in 1999.See also
*List of Intel microprocessors
This generational list of Intel processors attempts to present all of Intel's processors from the 4-bit 4004 (1971) to the present high-end offerings. Concise technical data is given for each product.
Latest
15th generation Core
Deskto ...
* List of AMD microprocessors
References
{{intelsock Socket 007