Also known as a RAM Stick, RAM Card is an add-in board used to add additional RAM into a computer. A RAM Card is an ATM card-sized printed circuit board that contains the actual memory chips which store the data being used by the PC and battery.
A RAM Card varies depending on the type of RAM chips being used as well as on the speed of the overall performance, which is commonly determined by generation. Hence, for every new generation RAM Card with enhanced performance is made to prevent accidental connections with incompatible motherboards. However, sometimes, new generation RAM Card makes it incompatible with previous generation.
A common type of RAM Card is referred as dual in-line memory module because of the separate pin functions on each side of the card unlike single in-line memory module that has redundant connectors on the other side.