The ATIV Tab runs Windows RT.

The ATIV Smart PC and Smart PC Pro are equipped with a digital stylus, called the S Pen, that Samsung has updated from its original appearance with the Galaxy Note. It now has 1,024 levels of pressure sensitivity and is slightly thicker.

Both are 11.6-in. Tablets, and each has a detachable keyboard dock that allows it to be used as either a clamshell laptop PC or a tablet PC. The Smart PC has a battery life of 13.5 hours, while the Smart PC Pro runs up to eight hours.

The Galaxy Note II, which ships in October globally, has a 5.5-in. display, larger than the original 5.3-in. display, and will come with redesigned S Pen. Its larger screen stays in the same sized body, however, although the increase in screen size bumps it up slightly to a 16:9 aspect ratio.

The ATIV Smart PC is slightly thinner and lighter than the Smart PC Pro. The Smart PC is 11.96 x 7.5 x .38 inches and weighs 26.4 ounces. The Smart PC Pro has the same height and width but is .46-inches thick and weighs 31.2 ounces. The ATIV Tab is 10.4 x 6.6 x .35 inches and 20.1 ounces. The ATIV S smartphone is 5.4 x 2.8 x .34 inches and weighs 4.7 ounces.