Viewsonic Widescreen LCD Display, X Series. Display diagonal: 510.5 mm (20.1 "), Response time: 16 ms, Display brightness: 300 cd/m². Power consumption (typical): 35 W. Width: 485 mm, Depth: 441 mm, Height: 201 mm. Operating relative humidity range: 10 - 90 %, Operating temperature range (T-T): 0 - 40 °C. Minimum system requirements: PC: VGA 1680x1054 Power Mac: G3/G4/G5 1680x1050