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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