- Official Post
Socket 1 was the second of a series of standard sockets created by Intel into which various x86 microprocessors were plugged. It was an upgrade to Intel's first standard PGA socket and the first with an official designation. Socket 1 was intended as a 486-upgrade socket and added one extra pin to prevent upgrade chips from being inserted into the older socket.
Socket 1 was a 169 pin LIF/ZIF PGA (17x17) socket suitable for the 5v, 16-33 MHz 486 SX, 486 DX, 486 DX2 and DX4 Overdrive processors.
LIF - left on the pic is a 386 LIF socket on the right is the 486 variant of it.
| CPU families | CPU Main Type | Socket Name | Year of introduction | PIN count | Package |
|---|---|---|---|---|---|
| Intel 80486 AMD 486 AMD 5x86 Cyrix 486 Cyrix 5x86 | 80486 | Socket 1 | 1989 | 169 | PGA |