A Complete List of CPU Sockets

A Complete List of CPU Sockets
By Gabriel Torres e Cássio Lima on September 20, 2012

Introduction

Since the very first CPU, both Intel and AMD have been creating several different sockets to be used by their processors. In this tutorial, we will list all socket types released to date with a list of compatible CPUs.

In the beginning, a CPU socket was compatible with just one kind of processor. This scenario changed with the launching of the 486 processor and the massive use of ZIF (Zero Insertion Force) sockets, also known as LIF (Low Insertion Force). The ZIF socket has a lever that installs and removes the CPU from the socket without the need of the user or the technician to press the CPU down in order for it to be installed on the socket. The use of this socket greatly lowered the chances of breaking or bending the CPU pins during its installation or removal. The use of the same pinout by more than one processor allowed the user or the technician to install different processor models on the same motherboard by merely removing the old CPU and installing the new one. Of course, the motherboard needed to be compatible with the new CPU being installed and also properly configured.

Since then, both Intel and AMD have been developing a series of sockets and slots to be used by their CPUs.

The socket created to be used together with the very first 486 processor wasn’t ZIF and didn’t allow you to replace the CPU with a different processor model. Even though this socket didn’t have an official name, let’s call it “socket 0.” After socket 0, Intel released socket 1, which had the same pinout as socket 0 with the addition of a key pin. It also adopted the ZIF standard, allowing the installation of several different types of processors on the same socket (i.e., on the same motherboard). Other socket standards were released for the 486 family after socket 1 (socket 2, socket 3, and socket 6) in order to increase the number of CPU models that could be installed on the CPU socket. Thus, socket 2 accepts the same CPUs accepted by socket 1 in addition to some more models, and so forth. Even though the socket 6 was designed, it was never used. Thus, we usually call the pinout used by 486-class processors as “socket 3.” Originally, Intel defined “overdrive” as the possibility of a socket to accept more than one CPU model. Intel also adopted this name on newer CPUs that used a pinout from an older CPU in order to allow the new CPU to be installed on an older motherboard.

The first Pentium processors (60 MHz and 66 MHz) used a pinout standard called socket 4, which was fed with 5 V. Pentium processors from 75 MHz on were fed with 3.3 V, requiring a new socket, called socket 5, which was incompatible with socket 4. (For example, a Pentium-60 couldn’t be installed on socket 5 and a Pentium-100 couldn’t be installed on socket 4.). Socket 7 uses the same pinout as socket 5 with the addition of one key pin, accepting the same processors accepted by socket 5 plus new CPUs, especially CPUs designed by competing companies. (The real difference between socket 5 and socket 7 is that while socket 5 always fed the CPU with 3.3 V, socket 7 allowed the CPU to be fed with a different voltage level, such as 3.5 V or 2.8 V, for example.) Super 7 socket is a socket 7 capable of running up to 100 MHz, used by AMD CPUs. We usually call the Pentium Classic and compatible CPUs pinout as “socket 7.”

As you may notice, sockets and pinouts at this stage were very confusing, as a given processor could be installed on different socket types. A 486DX-33 could be installed on sockets 0, 1, 2, 3 and, if it were released, 6.

For the next CPUs manufacturers followed a simpler scheme, where each CPU could be installed on just one socket type.

On the next pages, we list all socket types created by Intel and AMD since the 486 CPU, with a list of CPUs compatible with them.

Sockets for the Desktop Market

In the table below, we list all sockets used by CPUs targeted to the desktop market.

Socket	Pin Count	Release Date	Compatible CPUs
Socket 0	168	1989	486 DX
Socket 1	169	NA	486 DX 486 DX2 486 SX 486 SX2
Socket 2	238	NA	486 DX 486 DX2 486 SX 486 SX2 Pentium Overdrive
Socket 3	237	NA	486 DX 486 DX2 486 DX4 486 SX 486 SX2 Pentium Overdrive 5x86
Socket 4	273	Mar 1993	Pentium-60 and Pentium-66
Socket 5	320	Mar 1994	Pentium-75 to Pentium-120
Socket 6	235	never released	486 DX 486 DX2 486 DX4 486 SX 486 SX2 Pentium Overdrive 5x86
Socket 7	321	Jun 1995	Pentium-75 to Pentium-200 Pentium MMX K5 K6 6x86 6x86MX MII
Socket Super 7	321	May 1998	K6-2 K6-III
Slot 1 (SC242)	242	May 1997	Pentium II Pentium III (Cartridge) Celeron SEPP (Cartridge)
Socket 370	370	Aug 1998	Celeron (Socket 370) Pentium III FC-PGA Cyrix III C3
Socket 423 (PGA423)	423	Nov 2000	Pentium 4 (Socket 423)
Socket 463	463	1994	Nx586
Socket 478 (mPGA478B)	478	Aug 2001	Pentium 4 (Socket 478) Celeron (Socket 478) Celeron D (Socket 478) Pentium 4 Extreme Edition (Socket 478)
LGA775 (Socket T)	775	Aug 2004	Pentium 4 (LGA775) Pentium 4 Extreme Edition (LGA775) Pentium D Pentium Extreme Edition Celeron D (LGA 775) Core 2 Duo Core 2 Quad Core 2 Extreme Pentium Dual Core Pentium E6000 series
LGA1155 (Socket H2)	1,155	Jan 2011	Core i3 2000 and 3000 series Core i5 2000 and 3000 series Core i7 2000 and 3000 series Pentium G600, G800, and G2000 series Celeron G400 and G500 series
LGA1156 (Socket H1)	1,156	Sep 2009	Core i3 500 series Core i5 600 and 700 series Core i7 800 series Pentium G6900 series Celeron G1101
LGA1366 (Socket B)	1,366	Sep 2009	Core i7 900 series Celeron P1053
LGA2011 (Socket R)	2,011	Nov 2011	Core i7 3800 and 3900 series
Slot A	242	Jun 1999	Athlon (Cartridge)
Socket 462 (Socket A)	453	Jun 2000	Athlon (Socket 462) Athlon XP Athlon MP Duron Sempron (Socket 462)
Socket 754	754	Sep 2003	Athlon 64 (Socket 754) Sempron (Socket 754)
Socket 939	939	Jun 2004	Athlon 64 (Socket 939) Athlon 64 FX (Socket 939) Athlon 64 X2 (Socket 939) Sempron (Socket 939)
Socket 940	940	Sep 2003	Athlon 64 FX (Socket 940)
Socket AM2	940	May 2006	Athlon 64 (Socket AM2) Athlon 64 FX-62 Athlon 64 X2 (Socket AM2) Sempron (Socket AM2)
Socket AM2+	940	Nov 2007	Athlon 64 (Socket AM2/AM2+) Athlon 64 FX-62 Athlon 64 X2 (Socket AM2/AM2+) Phenom Sempron (Socket AM2)
Socket AM3	941	Apr 2010	Athlon II Phenom II Sempron (Socket AM3)
Socket AM3+	942	Oct 2011	Athlon II Phenom II Sempron (Socket AM3) FX
Socket F	1,207	Nov 2006	Athlon 64 FX-70, FX-72, and FX-74
Socket FM1	905	Jul 2011	A4, A6, A8, and E2
Socket FM2	904	2012	A4, A6, A8, A10, and E2

Sockets for the Server Market

In the table below, we list all sockets used by CPUs targeted to the server market.

Socket	Pin Count	Release Date	Compatible CPUs
Slot 8	387	1995	Pentium Pro
Slot 2 (SC330)	330	1998	Pentium II Xeon Pentium III Xeon
Socket 603	603	2001	Xeon Xeon MP
Socket 604	604	2002	Xeon Xeon MP
LGA775 (Socket T)	775	Aug 2004	Xeon 3000 series
LGA771 (Socket J)	771	2006	Xeon 3000 and 5000 series
mPGA478MT (Socket M)	478	2006	Xeon LV 1.66 GHz, 2.0 GHz, and 2.16 GHz Xeon ULV 1.66 GHz
LGA1155 (Socket H2)	1,155	Jan 2011	Xeon E3 Pentium 350
LGA1156 (Socket H1)	1,156	Sep 2009	Xeon 3400 series
LGA1366 (Socket B)	1,366	Sep 2009	Xeon 3500, 3600, 5500, and 5600 series Pentium 1400 series
FCLGA1567	1,567	Mar 2010	Xeon 6500 and 7500 series Xeon E7
LGA2011 (Socket R)	2,011	Nov 2011	Xeon E5 1600, 2600, and 4600 series
FCLGA1356	1,356	May 2012	Xeon E5 1400 and 2400 series
PAC418	418	2001	Itanium 733 and 800
PAC611	611	2002	Itanium 2
LGA1248	1,248	Feb 2010	Itanium 9300 series
Socket 939	939	2004	Opteron 100 series
Socket 940	940	Sep 2003	Opteron 100, 200, and 800 series
Socket F	1,207	Nov 2006	Opteron 13xS, 2200, 2300, 2400, 8200, 8300, and 8400 series
Socket C32	1,207	Jun 2010	Opteron 4000 series
Socket G34	1,974	Mar 2010	Opteron 6000 series

Sockets for the Mobile Market

In the table below, we list all sockets used by CPUs targeted to the mobile market. It is very important to note that “M” and “Mobile” on the name of the processors are not the same thing; “Celeron M” and “Mobile Celeron” are different products, for instance.

Pinouts marked with an asterisk don’t use a socket; the CPU is soldered directly on the motherboard.

Socket	Pin Count	Release Date	Compatible CPUs
Socket 7	321	Jun 1995	Mobile Pentium (Socket 7) Mobile Pentium MMX (Socket 7)
TCP320	320	NA	Mobile Pentium (TCP320) Mobile Pentium MMX (TCP320)
MMC-1	280	Apr 1998	Mobile Pentium II (MMC-1)
MMC-2	400	Apr 1998	Mobile Pentium II (MMC-2)
BGA2* (PBGA-B495)	495	Oct 1999	Mobile Pentium II (BGA2) Mobile Pentium III (BGA2) Mobile Pentium III-M (BGA2) Mobile Pentium III-M LV Mobile Pentium III-M ULV Mobile Celeron (BGA2) Mobile Celeron LV series up to 600 MHz Mobile Celeron ULV series up to 600 MHz
Micro-PGA2 (PPGA-B495)	495	Oct 1999	Mobile Pentium II (Micro-PGA2) Mobile Pentium III (Micro-PGA2) Mobile Pentium III-M (Micro-PGA2) Mobile Celeron (Micro-PGA2)
Socket 495	495	Feb 2000	Mobile Celeron (Socket 495)
Socket 478 (mPGA478B)	478	Aug 2001	Mobile Celeron 1 GHz and up Mobile Pentium 4 Mobile Pentium 4-M
Socket 479	479	May 2004	Mobile Celeron 1 GHz (Socket 479) Mobile Celeron LV series 650 MHz and up Mobile Celeron ULV series 650 MHz and up Celeron M (Socket 479) Pentium M (Socket 479) Core Solo (Socket 479) Core Duo (Socket 479)
Micro-FCBGA479*	479	May 2004	Pentium M (Micro-FCBGA) Celeron M (Micro-FCBGA) Core Solo (Micro-FCBGA) Core Duo (Micro-FCBGA) Core 2 Solo Core 2 Duo (Micro-FCBGA)
mPGA478MT (Socket M)	478	2006	Celeron M (Socket M) Core Solo (Socket M) Core Duo (Socket M) Core 2 Duo (Socket M) Pentium Dual Core T2060, T2080, and T2130
FCBGA6*	NA	Aug 2006	Celeron M (FCBGA6) Core 2 Duo (FCBGA6) Core 2 Duo L series
mPGA478MN (Socket P)	478	May 2007	Celeron M (Socket P) Celeron T series Core 2 Duo (Socket P) Core 2 Quad Core 2 Extreme Pentium Dual Core (Socket P) Pentium T series
Micro-FCBGA956*	956	May 2008	Celeron M ULV 700 series Core 2 Solo SU series Core 2 Duo SL series Core 2 Duo SP series Core 2 Duo SU series Pentium SU series
Socket G1 (rPGA988A)	988	Sep 2009	Celeron P4500 and P4600 series Pentium P series Core i3-300M series (Socket G1) Core i5-400M and 500M series (Socket G1) Core i7-600M, 700QM, 800QM, and 900QM series (Socket G1)
BGA1288*	1,288	Jan 2010	Celeron P4505 Celeron U series Pentium U series Core i3-300M, 300E, and 300UM series (BGA-1288) Core i5-400M, 400UM, 500M, 500E, and 500UM series (BGA-1288) Core i7 600E, 600LM, 600LE, 600UM, and 600UE series
Socket G2 (rPGA988B)	988	Jan 2011	Celeron B series Pentium B series Core i3-2300M series (Socket G2) Core i3-2330E Core i5-2000M and 3000M series (Socket G2) Core i5-2510E Core i7-2000M, 2000QM, 2000QE, 2000XM, 3000QM, and 3900XM series (Socket G2) Core i7-3520M Core i7-3610QE
BGA1023*	1,023	Jan 2011	Celeron B810E Celeron 700 and 800 series Pentium 900 series Core i3-2300M, 3000M, 3000U, and 3000UE series (BGA-1023) Core i5-3515E Core i5-2000M, 3000M, and 3000U series (BGA-1023) Core i7-2600M, 2600LE, 2600UE, 2700QE, and 3000 series (BGA-1023) Core i7-3615QE and 3612QE
BGA1224*	1,224	Jan 2011	Core i7-2000QM and 3000QM series (BGA-1224)
Socket 462 (Socket A)	453	Jun 2000	Mobile Athlon 4 Athlon XP-M (Socket 462) Mobile Duron
Socket 563	563	Apr 2002	Athlon XP-M (Socket 563)
Socket 754	754	Sep 2003	Athlon XP-M (Socket 754) Mobile Athlon 64 (Socket 754) Mobile Sempron (Socket 754) Turion 64 ML and MT series
Socket S1 (S1g1)	638	May 2006	Athlon X2 L310 Mobile Sempron (Socket S1) Athlon Neo TF series Turion 64 MK series Turion 64 X2 Turion X2 L510
Socket S1g2	638	Jun 2008	Athlon X2 QL series Sempron SI Turion X2 Turion X2 Ultra
Socket S1g3	638	Sep 2009	Athlon II M Sempron M Turion II M Turion II Ultra
Socket S1g4	638	May 2010	Athlon II P and N series Phenom II P, N, and X series Turion II P and N series V 120, 140, and 160
ASB1*	812	Jan 2009	Athlon Neo MV series Athlon Neo X2 Turion Neo Turion Neo X2 Turion X2 L510 Sempron 200U series
ASB2*	NA	May 2010	Athlon II Neo Turion II Neo V 105
Socket FT1 (BGA413)	413	Jan 2011	C E E1 E2 1000 series
Socket FS1	722	Jun 2011	A4 (Socket FS1) A6 (Socket FS1) A8 (Socket FS1) A10 (Socket FS1) E2 3000 series
Socket FP2	NA	2012	A4 (Socket FP2) A6 (Socket FP2) A8 (Socket FP2) A10 (Socket FP2)

Originally at http://www.hardwaresecrets.com/article/A-Complete-List-of-CPU-Sockets/373

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