CPU Sockets Chart
[ 486 CPU Speed Settings | 586 CPU Speed Settings | Motherboard Multiplier Settings | 686 CPU Speed Settings ]
Sockets
Sockets Pin
Holes
Typical
Voltages
Typical
Bus Speeds
Typical
Multipliers
Typical
Chipsets
Processors
486 Socket
486 bus
168 pin LIF

5v

20MHz
25MHz
33MHz

1.0x
2.0x
3.0x

? 486DX 20~33
486DX2 50~66
486DX4 75~1201
486DX2ODPR 50~66
486DX4ODPR 75~100
Am5x86 1331
Cx5x86 100~1201
--
ComputerNerd RA4
Gainbery 5x86 133
Kingston TurboChip 133
PowerLeap PL/586 133
PowerLeap PL-Renaissance/AT
Trinity Works 5x86-133
Socket 1
486 bus
169 pin LIF
169 pin ZIF

5v

16MHz
20MHz
25MHz
33MHz

1.0x
2.0x
3.0x
? 486SX 16~33
486SX2 50~66
486SXODP 25~33
486SX2ODP 50
486DX 20~33
486DX2 50~66
486DX4 75~1201
486DXODP 25~33
486DX2ODP 50~66
486DX4ODP 75~100
486DX2ODPR 50~66
486DX4ODPR 75~100
Am5x86 1331
Cx5x86 100~1201
--
ComputerNerd RA4
Evergreen 586 133
Gainbery 5x86 133
Kingston TurboChip 133
Madex 486
PowerLeap PL/586 133
PowerLeap PL-Renaissance/AT
Trinity Works 5x86-133
Socket 2
486 bus
238 pin LIF
238 pin ZIF

5v

25MHz
33MHz
40MHz
50MHz

1.0x
2.0x
3.0x

Intel 420TX (Saturn)
VLSI 82C480
486SX 25~33
486SX2 50~66
486SXODP 25~33
486SX2ODP 50
486DX 25~50
486DX2 50~80
486DX4 75~1201
486DXODP 25~33
486DX2ODP 50~66
486DX4ODP 75~100
486DX2ODPR 50~66
486DX4ODPR 75~100
Pentium ODP 63~83
Am5x86 1331
Cx5x86 100~1201
--
ComputerNerd RA4
Evergreen 586 133
Gainbery 5x86 133
Kingston TurboChip 133
Madex 486
PowerLeap PL/586 133
PowerLeap PL-Renaissance/AT
Trinity Works 5x86-133
Socket 3
486 bus
237 pin LIF
237 pin ZIF

3.3v
5v

25MHz
33MHz
40MHz
50MHz

1.0x
2.0x
3.0x

ALi M1429
ALi M1439
ALi M1489 (FinALi)
Intel 420EX (Aries)
Intel 420TX (Saturn)
Intel 420ZX (Saturn-II)
OPTi 82C495
OPTi 82C895
SiS 85C406
SiS 85C461
SiS 85C471
SiS 85C49x
UMC UM8498
UMC UM888x
VIA 82C496 (Pluto)
486SX 25~33
486SX2 50~66
486SXODP 25~33
486SX2ODP 50
486DX 25~50
486DX2 50~80
486DX4 75~120
486DXODP 25~33
486DX2ODP 50~66
486DX4ODP 75~100
486DX2ODPR 50~66
486DX4ODPR 75~100
Pentium ODP 63~83
Am5x86 133
Cx5x86 100~120
--
ComputerNerd RA4
Evergreen 586 133
Gainbery 5x86 133
Kingston TurboChip 133
Madex 486
PowerLeap PL/586 133
PowerLeap PL-Renaissance/AT
PowerLeap PL-Renaissance/PCI
Trinity Works 5x86-133
Socket 4
P5 bus
273 pin LIF
273 pin ZIF

5v

60MHz
66MHz

none

Intel 430LX (Mercury)
OPTi 82C546 (Python)
OPTi 82C596 (Cobra)
Pentium 60~66
Pentium OverDrive 120~133
--
Computer Nerd RA3
Evergreen AcceleraPCI
PowerLeap PL/54C
PowerLeap PL/54CMMX
PowerLeap PL-Renaissance/AT
PowerLeap PL-Renaissance/PCI
Trinity Works P6x
Socket 5
P54C bus
296 pin LIF
296 pin ZIF
320 pin LIF
320 pin ZIF
STD
VR
VRE
50MHz
60MHz
66MHz
1.5x
2.0x
ALi Aladdin III
ALi Genie
Intel 430FX (Triton I)
Intel 430NX (Neptune)
OPTi 82C546 (Python)
OPTi 82C596 (Cobra)
OPTi Vendetta
SiS 501/02/03
SiS 5511/12/13
SiS 5571 (Trinity)
SiS 5581/82
SiS 5596 (Genesis)
SiS 5597/98 (Jedi)
UMC 881x
VIA Apollo Master
VLSI 82C59x
K5 PR75~PR133
6x86L PR120+~PR166+1
Pentium 75~133
Pentium ODP 125~166
--
K6 166~3001
K6-2 266~4001
Winchip 180~200
Winchip-2 200~240
Winchip-2A 233
6x86MX PR166~PR2331
Pentium ODP MMX 125~180
Pentium MMX 166~2331
--
Concept Manuf. VA55C
Evergreen PR166
Evergreen MxPro
Evergreen AcceleraPCI
Evergreen Spectra
Kingston TurboChip
Madex 586
PNY QuickChip 200
PNY QuickChip-3D 200
PowerLeap PL/OD54C
PowerLeap PL-ProMMX
PowerLeap PL/K6-III
PowerLeap PL-Renaissance/AT
PowerLeap PL-Renaissance/PCI
Trinity Works P7x

Socket 6
486 bus
235 pin ZIF 3.3v 25MHz
33MHz
40MHz
2.0x
3.0x
? 486DX4 75~120
Socket 7
P54C bus
P55C bus
296 pin LIF
321 pin ZIF
Split
STD
VR
VRE
VRT
40MHz
50MHz
55MHz
60MHz
62MHz
66MHz
68MHz
75MHz
83MHz
90MHz
95MHz
100MHz
102MHz
112MHz
124MHz
1.5x
1.75x
2.0x
2.33x
2.5x
2.66x
3.0x
3.33x
3.5x
4.0x
4.5x
5.0x
5.5x
6.0x
ALi Aladdin III
ALi Aladdin IV
ALi Aladdin IV+
ALi Aladdin V
ALi Aladdin V+
ALi Aladdin 7
AMD 640
Intel 430FX (Triton I)
Intel 430HX (Triton II)
Intel m430MX (Ariel)
Intel 430TX
Intel 430VX (Triton II/III)
OPTi 82C556 (Viper)
OPTi 82C566 (ViperMax)
OPTi 82C576 (Viper Xpress)
OPTi 82C750 (Vendetta)
SiS 530 (Sinbad)
SiS 540
SiS 5511/12/13
SiS 5571 (Trinity)
SiS 5581/82
SiS 5591/92 (David)
SiS 5596 (Genesis)
SiS 5597/98 (Jedi)
VIA Apollo Master
VIA Apollo MVP3
VIA Apollo MVP4
VIA Apollo VP-1
VIA Apollo VP-2
VIA Apollo VP-2/97
VIA Apollo VP-3
VIA Apollo VPX
VIA Apollo VPX/97
VLSI 82C541 (Lynx)
K5 PR75~PR200
6x86 PR90+~PR200+
6x86L PR120+~PR200+
Pentium 75~200
Pentium ODP 125~166
--
K6 166~300
K6-2 266~550
K6-2+ 450~550
K6-III 400~450
K6-III+ 450~500
Winchip 150~240
Winchip-2 200~240
Winchip-2A 200~266
6x86MX PR166~PR333
M II 233~433
Pentium ODP MMX 125~200
Pentium MMX 166~233
mP6 166~266
--
Computer Nerd RA5
Concept Manuf. VA55C
Evergreen PR166
Evergreen MxPro
Evergreen AcceleraPCI
Evergreen Spectra
Kingston TurboChip
Madex 586
PNY QuickChip-3D 200
PowerLeap PL/OD54C
PowerLeap PL/ProMMX
PowerLeap PL/K6-III
PowerLeap PL-Renaissance/AT
PowerLeap PL-Renaissance/PCI
Socket 8
P6 bus
387 pin LIF
387 pin ZIF
VID VRM
(2.1v~3.5v)
60MHz
66MHz
75MHz
2.0x
2.5x
3.0x
4.5x
5.0x
5.5x
6.0x
6.5x
7.0x
7.5x
8.0x
Corollary Profusion
Intel 440FX (Natoma)
Intel 450GX (Orion)
Intel 450KX (Mars)
OPTi 650 (Discovery)
VIA Apollo P6
Pentium Pro 150~200
Pentium II OverDrive 300~333
--
Evergreen AcceleraPCI
PowerLeap PL-Pro/II
PowerLeap PL-Renaissance/AT
PowerLeap PL-Renaissance/PCI
Slot 1
P6 bus
242 pin SECC
242 pin SECC2
242 pin SEPP
VID VRM
(1.3v~3.3v)
60MHz
66MHz
68MHz
75MHz
83MHz
100MHz
102MHz
112MHz
124MHz
133MHz
3.5x
4.0x
4.5x
5.0x
5.5x
6.0x
6.5x
7.0x
7.5x
8.0x
8.5x
9.0x
9.5x
10.0x
10.5x
11.0x
11.5x
ALi Aladdin Pro I
ALi Aladdin Pro II
ALi Aladdin TNT2
ALi Aladdin Pro 4
Intel 440BX
Intel 440EX
Intel 440FX (Natoma)
Intel 440GX
Intel 440LX
Intel 810 (Whitney)
Intel 810e (Whitney)
Intel 815 (Solano)
Intel 815e (Solano-2)
Intel 820 (Camino)
Intel 820e (Camino-2)
Intel 840 (Carmel)
SiS 5600
SiS 600
SiS 620
SiS 630
SiS 630E
SiS 630S
VIA Apollo P6
VIA Apollo Pro
VIA Apollo Pro+
VIA Pro133
VIA Pro133A
VIA Pro266
VIA PM-133
VIA PM601
Celeron 266~300 (Covington)
Celeron 300A~433 (Mendocino)
Celeron 300A~5331 (Mendocino PGA)
Celeron 500A~1.1GHz1 (Coppermine-128)
Pentium Pro 150~2001
Pentium II 233~300 (Klamath)
Pentium II 266~450 (Deschutes)
Pentium III 450~600B (Katmai)
Pentium III 533EB~1.13GHz (Coppermine)
--
Evergreen Performa
PowerLeap PL/PII
PowerLeap PL-iP3
PowerLeap PL-iP3/T
various Slotket adapters
Slot 2
P6 bus
330 pin SECC VID VRM
(1.3v~3.3v)
100MHz
133MHz
4.0x
4.5x
5.0x
5.5x
6.0x
6.5x
7.0x
Intel 440GX
Intel 450NX
Intel 840 (Carmel)
Intel Profusion
Pentium II Xeon 400~450 (Drake)
Pentium III Xeon 500~550 (Tanner)
Pentium III Xeon 600~1GHz (Cascades)
Socket 370
P6 bus
370 pin ZIF VID VRM
(1.05v~2.1v)
66MHz
100MHz
133MHz
200MHz
4.5x
5.0x
5.5x
6.0x
6.5x
7.0x
7.5x
8.0x
8.5x
9.0x
9.5x
10.0x
10.5x
11.0x
11.5x
12.0x
13.0x
14.0x
ALi Aladdin TNT2
ALi Aladdin Pro 4
ALi Aladdin Pro 5
ALi Aladdin Pro 5T
Intel 440BX
Intel 440ZX
Intel 810 (Whitney)
Intel 810e (Whitney)
Intel 810e2 (Whitney)
Intel 815 (Solano)
Intel 815e (Solano-2)
Intel 815eg (Solano-3)
Intel 815ep (Solano-3)
Intel 815g (Solano-3)
Intel 815p (Solano-3)
Intel 820 (Camino)
Intel 820e (Camino-2)
Intel 830G (Almador)
Intel 830P (Almador)

SiS 630
SiS 630E
SiS 630ET
SiS 630S
SiS 630ST
SiS 633
SiS 633T
SiS 635
SiS 635T
SiS 640T
VIA Apollo Pro+
VIA Pro133A
VIA Pro133T
VIA Pro266
VIA Pro266T
VIA PL-133
VIA PL-133T
VIA PLE133 (PM601)
VIA PLE133T
VIA PM-133

VIA PM-266T
VIA Pro333T
M3 600~??? (Mojave)
Celeron 300A~533 (Mendocino)
Celeron 500A~1.1GHz (Coppermine-128)
Celeron 1.0A~1.4GHz (Tualatin)
Pentium III 500E~1.13GHz (Coppermine)
Pentium III 866~1.13GHz (Coppermine-T)
Pentium III 1.0B~1.33GHz (Tualatin)
Pentium III-S 700~
??? (Tualatin)
Cyrix III PR433~PR533 (Joshua)
Cyrix III 533~667 (Samuel)
C3 733A~800A (Samuel 2)
C3 800A~866A (Ezra)
C3 800T~
??? (Ezra-T)
C4 ??? (Nehemiah)
C4 ??? (Esther)
--
PowerLeap PL Neo-S370
Slot A
EV6 bus
242 pin SECC VID VRM
(1.3v~2.05v)
100MHz (x2)
133MHz (x2)
5.0x
5.5x
6.0x
6.5x
7.0x
7.5x
8.0x
8.5x
9.0x
9.5x
10.0x
AMD 750 (Irongate)
VIA KX-133
Athlon 500~700 (K7)
Athlon 550~1GHz (K75)
Athlon 650~1GHz (Thunderbird)
Athlon Ultra (Mustang)
Socket A
EV6 bus
462 pin ZIF VID VRM
(1.1v~2.05v)
100MHz (x2)
133MHz (x2)
6.0x
6.5x
7.0x
7.5x
8.0x
8.5x
9.0x
9.5x
10.0x
10.5x
11.0x
11.5x
12.0x
12.5x
13.0x
13.5x
14.0x
14.5x
15.0x
ALi MAGiK 1
ALi MAGiK 2
ALi Aladdin K7 III
ALi M1667

AMD 750 (Irongate)
AMD 760 (Irongate-4)
AMD 760MP (Irongate-4)
AMD 760MPX (Irongate-4)
AMD 770
ATI IGP 320
NVidia nForce220 (Crush 11)
NVidia nForce220D (Crush 11)
NVidia nForce230 (Crush 11)
NVidia nForce230-T (Crush 11)
NVidia nForce415D (Crush 12)
NVidia nForce420 (Crush 12)
NVidia nForce420D (Crush 12)
NVidia nForce430 (Crush 12)
NVidia nForce430-T (Crush 12)
NVidia nForce615D (Crush ?)
NVidia nForce620D (Crush ?)
NVidia nForce2-G IGP (Crush 18)
NVidia nForce2-GT IGP (Crush 18)
NVidia nForce2-S SPP (Crush 18)
NVidia nForce2-ST SPP (Crush 18)
NVidia nForce2 400 (Crush 18)
NVidia nForce2 Ultra 400 (Crush 18)
SiS 730S
SiS 733
SiS 735
SiS 740
SiS 741
SiS 745
SiS 746
SiS 746DX
SiS 746FX
SiS 748
SiS 750
SiS 760
VIA KL-133
VIA KL-133A
VIA KLE133
VIA KM-133
VIA KM-133A
VIA KM-266
VIA KM-333
VIA KM-400
VIA KT-133
VIA KT-133A
VIA KT-133E
VIA KT-266
VIA KT-266A
VIA KT-266DP
VIA KT-333
VIA KT-333A
VIA KT-400
VIA KT-400A
KT-600
Duron 600~950 (Spitfire)
Duron 1.0GHz~1.3GHz (Morgan)
Duron 1.33G (Appaloosa)
Duron 1.4GHz~1.8GHz (Applebred)
Athlon 650~1.4GHz (Thunderbird)
Athlon Ultra (Mustang)
Athlon 4 850~
??? (mobile Palomino)
Athlon MP 1.0GHz~2100+ (Palomino)
Athlon MP 2000+~2600+ (Thoroughbred)
Athlon MP 2800+~
??? (Barton)
Athlon XP 1500+~2100+ (Palomino)
Athlon XP 1600+~
??? (Thoroughbred)
Athlon XP 2500+~
??? (Barton)
Athlon XP ??? (Thoroughbred-S)
Athlon XP ??? (Thornton)
Socket 423
P6.8 bus
423 pin ZIF VID VRM
(1.0v~1.85v)
100MHz (x4) 13.0x
14.0x
15.0x
16.0x
17.0x
18.0x
19.0x
20.0x
Intel 845 (Brookdale)
Intel 850 (Tehama)
VIA P4X-266
Pentium 4 1.3GHz~2.0GHz (Willamette)
Pentium 4 1.6A~
???1 (Northwood)
Celeron 1.7GHz~1.8GHz1 (Willamette)
--
Powerleap PL-P4/W
Powerleap PL-P4/N
Socket 478
P6.8 bus
478 pin ZIF VID VRM 100MHz (x4)
133MHz (x4)
166MHz (x4)
200MHz (x4)
15.0x
16.0x
17.0x
18.0x
19.0x
20.0x
22.0x
24.0x
25.0x
26.0x
ALi Aladdin P4
ALi Aladdin P4A
ALi M1672
ALi M1681
ALi M1741

ATI IGP 330
ATI IGP 340

ATI IGP ??? (RS-250)
ATI ??? (RS-300)
ATI ??? (RX-300)
ATI ??? (RS-400)

Intel 845 (Brookdale)
Intel 845B (Brookdale DDR)
Intel 845E (Brookdale-E)
Intel 845G (Brookdale-G)
Intel 845GE (Brookdale-GE)
Intel 845GL (Brookdale-GL)
Intel 845GV (Brookdale-GV)
Intel 845PE (Brookdale-PE)
Intel 850 (Tehama)
Intel 850e (Tehama-E)
Intel 855 (Tulloch)
Intel E7205 (Granite Bay)
Intel 865P (Springdale-P)
Intel 865PE (Springdale-PE)
Intel 865G (Springdale-G)
Intel 875P (Canterwood)
SiS 645
SiS 645DX
SiS 648
SiS 648DX
SiS 648FX
SiS 650
SiS 650GX
SiS 651
SiS 655
SiS 655FX
SiS 660
SiS 661FX
SiS R658
SiS R659
VIA P4M-266

VIA P4M-266A
VIA P4M-333

VIA P4X-266
VIA P4X-266A
VIA P4X-266E
VIA P4X-333
VIA P4X-400

VIA P4X-400A
VIA PT-600

VIA PT-800
Celeron 1.7GHz~1.8GHz (Willamette)
Celeron 2.0GHz~
??? (Northwood-128)
Pentium 4 1.4GHz~2.0GHz (Willamette)
Pentium 4 1.6A~
??? (Northwood)
Pentium 4 Extreme 3.2GHz~??? (Gallatin)

Pentium 4 2GHz+ (Prescott)
Socket T
P6.8 bus
775 ball LGA VID VRM 200MHz (x4)
266MHz (x4)
?x Intel ? (Grantsdale)
Intel ? (Grantsdale-G)
Intel ? (Copper River)
Pentium 4 3GHz+ (Prescott)
Pentium 4 3GHz+ (Tejas)
Pentium 4 3GHz+ (Nehalem)
Socket 603
Socket 604

P6.8 bus
603 pin ZIF
604 pin ZIF
VID VRM
(1.1v~1.85v)
100MHz (x4)
133MHz (x4)
166MHz (x4)
14.0x
15.0x
17.0x
18.0x
20.0x
22.0x
IBM Summit
Intel 860 (Colusa)
Intel 860E (Colusa-E)
Intel E7500 (Plumas)
Intel E7501 (Plumas 533)

Intel ? (Plumas LE)
Intel E7505 (Placer)
Intel 870
Intel ? (Lindenhurst)
Xeon 1.4GHz~2.0GHz (Foster)
LV Xeon 1.6GHz~2.0GHz (Prestonia)
Xeon 1.8GHz~3.06GHz (Prestonia)
Xeon 3.06GHz~
??? (Gallatin)
Xeon ??? (Nocona)
Xeon ??? (Jayhawk)
Xeon MP 1.4GHz~1.6GHz (Foster MP)
Xeon MP 1.5GHz~
??? (Gallatin)
Xeon MP ??? (Potomac)
PAC418
P7 bus
418 pin VLIF
(plus power slot)
VID VRM
(?v~?v)
133MHz (x2) 5.5x
6.0x
Intel 460GX Itanium 733~800 (Merced)
PAC611
P7 bus
611 pin VLIF
(plus power slot)
VID VRM
(?v~?v)
200MHz (x2) 4.5x
5.0x
IBM Summit
Intel 460GX
Intel E8870
Itanium 2 900MHz~1.0GHz (McKinley)
Itanium 2 1.3GHz~
??? (Madison)
Itanium 2 1GHz+ (Deerfield)
Itanium 2 1GHz+ (Montecito)
Itanium 2 1GHz+ (Shavano)
Itanium 2 1GHz+ (Tanglewood)
Socket 754
HT bus
754 pin ZIF VID VRM
(0.8v~1.55v)
200MHz (x2) ? ALi M1687
ALi M1688
AMD 8000 (Golem)
AMD Lokar
ATI ??? (RS-380)
ATI ??? (RX-380)

NVidia nForce3
NVidia CK8
SiS 755
SiS 760

VIA K8M-800
VIA K8T-800
Athlon 64 3200+~??? (Clawhammer)
Athlon 64 1GHz+ (Paris)
Athlon 64 1GHz+ (San Diego)
Athlon 64 1GHz+ (Victoria)
Socket 940
HT bus
940 pin ZIF VID VRM
(0.8v~1.55v)
200MHz (x2) 7.0x
8.0x
9.0x
ALi M1687
ALi M1688

AMD 8000 (Golem)
AMD Lokar
NVidia nForce3
NVidia nForce3 Pro 150
NVidia nForce3 Pro 250
SiS 755
SiS 760

VIA K8T-400M
VIA K8T-800
Athlon FX-51~??? (Sledgehammer)
Opteron ??? (Clawhammer DP)
Opteron 140~??? (Sledgehammer)
Opteron 240~
??? (Sledgehammer)
Opteron 840~
??? (Sledgehammer)
Opteron ??? (Athens)

1 - Special voltage and/or pin adapter may be required.

LIF - Low Insertion Force socket (no handle).
MD - Minimum Delay (modified timing).
PGA - Micro Pin Grid Array.
MSPGA - Modified Staggered Pin Grid Array.
ODP - OverDrive Processor.
ODPR - OverDrive Processor Replacement.
PGA - Pin Grid Array.
SECC - Single Edge Contact Cartridge.
SEPP - Single Edge Processor Package (Celeron).
SPGA - Staggered Pin Grid Array.
Split - Split voltages (lower core with a 3.3v I/O).
STD - 3.3v (3.135v ~ 3.465v) - Standard Voltage.
VLIF - Very Low Insertion Force socket.
VR - 3.38v (3.300v ~ 3.465v) - Voltage Regulated.
VRE - 3.52v (3.450v ~ 3.600v) - (B-step) Voltage Regulated Extended.
VRE - 3.5v (3.400v ~ 3.600v) - (C2 step and later) Voltage Regulated Extended.
VRT - 2.9vcore / 3.3vI/O - split Voltage Reduction Technology (mobile chips only).
VID VRM - Voltage ID Voltage Regulator Module (allows CPU to program VRM to proper voltage).
ZIF - Zero Insertion Force socket (with handle).

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Notes:

  • Socket 7 and Socket 5 are very similar in appearance, but there are significant differences.
    • Socket 7 requires 5.0 amps at 3.3v, while Socket 5 only requires 4.33 amps.
    • The maximum power dissipation for Socket 7 is 17 watts, two watts higher than Socket 5.
    • Vertical clearance above the CPU was raised from 1.35" to 1.75".
    • Socket 7 comes with a 321st pin located at AH-32 to be used for a KEY pin, which is not electronically connected to either the CPU or the motherboard.
    • Pin AL-01 is changed to Vcc2DET to identify split-rail voltages within newer processors.
    • Socket 7 is defined as a superset of Socket 5, and can handle all the previous processors that worked in Socket 5.
    • Also note that most all Socket 5 motherboards only support 1.5x and 2.0x multipliers, making their maximum processor speed 133MHz (66x2.0). And there are also some Socket 5 boards that can only go up to 120MHz.
  • Earlier Socket 7 motherboards do not have split voltage capabilities required by MMX-capable chips (AMD K6, Cyrix 6x86MX, Intel Pentium MMX) as well as the Cyrix 6x86L processor.
  • 233MHz (66x3.5) chips utilize the 1.5x multiplier as 3.5x on Socket 7 boards that do not have a jumper for 3.5x. Newer motherboards, on the other hand, will add a third jumper (BF2) to take care of higher clock multipliers.
  • Newer chips that use a 4.0x multiplier or higher require a Socket 7 motherboard that has a third multiplier jumper. Unlike using the '1.5x' setting as '3.5x', setting a motherboard to '2.0x' won't produce a '4.0x' multiplier in the chip.
  • The 62MHz and 68MHz bus speeds are 'turbo' modes for 60MHz and 66MHz speeds.
  • As long as it isn't on-Die, the L2 cache on a Slot 1 processor runs at only half the core processor speed. Slot 2 has processors with full-speed L2 cache and larger size caches (1MB, 2MB).
  • All bus speeds listed on this page are actual speeds; not DDR. The Slot A, Socket A, Socket 423/478, Socket 603, and PAC418 chips all use a dual (2x) or quad-pumped (4x) bus that hits on the rising and falling edges of the clock, yielding a faster effective bus speed. The quad-pumped bus works similar to that of AGP 4x mode (it uses a synchronous signal to double strobe each rising and falling edge).

Links

    Socket Photos

  • 486 Socket - 168 pin holes (17x17) PGA LIF socket.
  • Socket 1 - 169 pin holes (17x17) PGA LIF socket.
  • Socket 2 - 238 pin holes (19x19) PGA ZIF socket.
  • Socket 3 - 237 pin holes (19x19) PGA ZIF socket.
  • Socket 4 - 273 pin holes (21x21) PGA ZIF socket.
  • Socket 5 - 320 pin holes (19x19) SPGA ZIF socket.
  • Socket 6 - 235 pin holes (19x19) PGA ZIF socket.
  • Socket 7 - 321 pin holes (19x19) SPGA ZIF socket.
  • Socket 8 - 387 pin holes (24x26) MSPGA ZIF socket.
  • Slot 1 - 242 leads. SEC slot.
  • Slot 2 - 330 leads. SEC slot.
  • Socket 370 - 370 pin holes (19x19) SPGA ZIF socket.
  • Socket 418 - 418 pin holes (19x19) SPGA ZIF socket. Originally intended to replace Socket 370 for dual Pentium III chips, the socket was never released.
  • Slot A - 242 leads. SEC slot.
  • Socket A - 462 (actually 453) pin holes (19x19) SPGA ZIF socket.
  • Socket 423 - 423 pin holes (20x20) SPGA ZIF socket.
  • Socket 478 - 478 pin holes (26x26) PGA ZIF socket.
  • Socket 603 - 603 pin holes (31x25) PGA ZIF socket.
  • Socket 604 - 604 pin holes (31x25) PGA ZIF socket. For 533MHz-based and Low Voltage Xeons.
  • PAC418 - 418 pin holes (2x(19x6)) VLIF socket.
  • PAC611 - 611 pin holes (25x28) VLIF socket.
  • Socket 754 - 754 pin holes (29x29) PGA ZIF socket.
  • Socket 940 - 940 pin holes (31x31) PGA ZIF socket.
  • Various 486 Sockets - Socket 1, 2, 3, and 6.
  • Various Pentium Sockets - Socket 4, 5, 7, and 8.
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