Differences Between Socket AM2 and Socket 939-Pin

	Back
*What are the major differences between socket AM2 and socket 939-pin?*

Socket AM2 provides support for DDR2 memory. Socket AM2 is almost identical to socket 939 but uses a protective mechanism (a manufacturing “key”) designed to prevent any socket 939-pin CPUs (DDR1 only) from being inserted into a socket AM2 motherboard, and to prevent socket AM2 CPUs (DDR2 only) from being inserted into a socket 939-pin motherboard.