Type OF Processor Socket
Socket 370 S Socket AMD 940 Socket 604 PAC 418-2 Slot 1 Socket 3 Socket 1 Socket 2 Socket 5 List of Sockets and slots Socket name Year of introduction Year of EOL CPU families Package Pin count Pin pitch Bus speed Notes DIP 1970s Still available Intel 8086 Intel 8088 DIP 40 2.54mm 5/10 MHz PLCC ? Still available Intel 80186 Intel 80286 Intel 80386 PLCC 68, 132 1.27mm 6-40 MHz Socket 1 1989 ? Intel 80486 PGA 169 ? 16-50 MHz Socket 2 ? ? Intel 80486 PGA 238 ? 16-50 MHz Socket 3 1991 ? Intel 80486 PGA 237 ? 16-50 MHz Socket 4 ? ? Intel Pentium PGA 273 ? 60-66 MHz Socket 5 ? ? Intel Pentium AMD K5 IDT WinChip C6 IDT WinChip 2 PGA 320 ? 50-66 MHz Socket 6 ? ? Intel 80486 PGA 235 ? ? Socket 7 1994 ? Intel Pentium Intel Pentium MMX AMD K6 PGA 321 ? 50-66 MHz Super Socket 7 1998 ? AMD K6-2 AMD AMD K6-III Rise mP6 Cyrix MII PGA 321 ? 66-100 MHz Socket 8 1995 ? Intel Pentium Pro PGA 387 ? 60-66 MHz Slot 1 1997 ? Intel Pentium II Intel Pentium III Slot