Socket-939 is a 939-contact CPU socket which is used by AMD CPU's, such as the Athlon 64 and Athlon 64 FX.

Socket-939 supports a 200MHz system clock and a 1000Mhz HyperTransport link.

The Socket-939 is a Pin Grid Array (PGA) Zero Insertion Force (ZIF) socket.

A ZIF socket features a lever on one side of the socket. When this lever is pulled up, the spring contacts inside the socket are opened. This allows the CPU to be inserted easily into the socket. The lever is then pushed down, closing the spring contacts and clamping the CPU into place.

Socket-939