 Some problems remain with distortions to the user interface and geometric distortions at the edges of the display since the games weren't written with such a wide FOV in mind.In 2009, AMD/ATI released its Radeon HD 5000 Series which included an AMD Eyefinity-branded display controllers.These display controllers allow users to use 3 or more monitors on a single video card, using at least one display port on the back of the card.