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[ The PC Guide | Systems and Components Reference Guide | The Processor | Processor Physical Characteristics | Processor Sockets and Slots ]

Summary of Sockets and Slots for Specific Processors

The table below summarizes the main characteristics of the Intel socket and slot standards. Shown also are the main processors used with each socket, and the type of motherboard the socket is used on. Note that there are many different types of Pentium OverDrive processor, each geared specifically to the type of socket it is used in. To see full details of all the characteristics for any specific processor, look here.

Designation

# of Pins

Pin Rows

Voltage

Motherboard Generation

Supported Processors

Socket 1

169

3

5V

Fourth

80486DX, 80486SX, 80486DX2, 80486DX4 OverDrive

Socket 2

238

4

5V

Fourth

80486DX, 80486SX, 80486DX2, 80486DX4 OverDrive, Pentium OverDrive 63 and 83

Socket 3

237

4

5V / 3.3V

Fourth

80486DX, 80486SX, 80486DX2, 80486DX4, AMD 5x86, Cyrix 5x86, Pentium OverDrive 63 and 83

Socket 4

273

4

5V

Fifth (5V)

Pentium 60-66, Pentium OverDrive 120/133

Socket 5

320

5

3.3V

Fifth

Pentium 75-133 MHz, Pentium OverDrive 125-166, Pentium with MMX OverDrive 125-166

Socket 6

235

4

3.3V

Fourth

Not used

Socket 7

321

5

2.5- 3.3V

Fifth

Pentium 75-200 MHz, Pentium OverDrive, Pentium with MMX, Pentium with MMX OverDrive, 6x86, K5, K6, 6x86MX

Socket 8

387

5

3.1V / 3.3V

Sixth

Pentium Pro

Slot 1

242

n/a

2.8V / 3.3V

Sixth

Pentium II, Pentium Pro (with Socket 8 on daughtercard)

Next: Processor Architecture and Operation

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