Socket 4

Socket 4 was a 168-pin CPU socket used by early Intel Pentium processors (specifically, 60 and 66 MHz models) and some OverDrive processors. It was introduced in 1993, and was a significant departure from earlier Intel CPU sockets, as it was designed to accommodate the higher pin count and power requirements of the Pentium architecture. Socket 4 operated at a 5V voltage. Due to its relatively short lifespan and limited compatibility, it was quickly superseded by Socket 5. The relatively low clock speeds of the Pentium processors that Socket 4 supported, combined with the introduction of more efficient and capable sockets, rendered it obsolete within a year.