Logitech has unveiled a PC gamepad with an interesting feature: it keeps the hands of gamers cool and dry. The ChillStream has a built-in 40 mm fan that circulates up to 3.41 cubic feet of air per minute. Three narrow vents on each side of the controller push air directly onto the four fingers, the base of the thumb and the palm of the hand. The air stream can be set at continuous, interval or off modes. The controller will be available in September for USD 40.