Q: i think it's 23'' or 24'', but i'm not sure. there is a limit on size because the gma 950 can't support anything huge other than a tv
A: DVI video output to support digital resolutions up to 1920 by 1200 pixels; supports 20-inch Apple Cinema Display and 23-inch Apple Cinema HD Display; supports coherent digital displays up to 154MHz; supports noncoherent digital displays up to 135MHz http://www.apple.com/macmini/specs.html