At just 3 inches high (or wide, when sitting on its side), the HP Compaq Dc7100 Ultra-Slim Desktop is surpassed only by the Mac Mini in its thinness. However, the HP is considerably larger than the Mac in other dimensions, at 13.5 inches wide and just over 12 inches deep. Usually a thin "pizza-box" style case like this reflects a lack of expandability, but the Dc7100 retains some..



Link: PC World