Automatic card shufflers include a card input mechanism for inputting cards into the card shuffler, a card storage device for receiving cards from the card input mechanism and temporarily storing cards within the card shuffler, and a card output mechanism for outputting shuffled cards from the card shuffler. The card storage device may include a movable rack configured to move vertically within the card shuffler. The movable rack may have a plurality of card storage compartments therein, each of which may be sized and configured to hold two cards therein. The card output mechanism includes a movable ejector configured to simultaneously eject cards out from two or more card storage compartments of the movable rack. Related methods include methods of fabricating such card shufflers, and methods of using such card shufflers.