| Socket 4 | |
| Formfactors: | PPGA |
| Contacts: | 273 |
| Type: | ZIF |
| Protocol: | ? |
| Fsb: | 60, 66 MT/s |
| Voltage: | 5 V |
| Processors: | Intel P5 Pentium |
| Predecessor: | Socket 3 |
| Successor: | Socket 5 |
Socket 4, presented in 1993, was the first CPU socket designed for the early P5 Pentium microprocessors. Socket 4 was the only 5-volt socket for the Pentium. Socket 4 does support a special Pentium OverDrive, which allows running at 120 MHz (for the 60 MHz Pentium) or 133 MHz (for the 66 MHz Pentium).
Socket 4 was superseded by the 3.3-volt-powered Socket 5 in 1994.