Surface Pro runs on a third-generation Intel Core i5 processor with Intel HD Graphics 4000,
rather than the Surface RT's Tegra 3.
Surface Pro has 4GB of RAM, up from Surface RT's 2GB.
Surface RT's 1366x768 display, Surface Pro's screen is full HD at 1920x1080,
and it supports 10-point multitouch, compared to Surface RT's 5-point.
Surface Pro has a USB 3.0 port; Surface RT only supports USB 2.0.
Surface Pro has a beefier at 42 Watt-hours compared to Surface RT's 31.5,
Surface Pro is 2 pounds (0.91kg) versus Surface RT's 1.5 pounds (0.68kg).
Unlike Surface RT, the Pro version comes with a pen for drawing and handwriting input.
Surface Pro with 64GB SSD: $899, with 128GB: $999.
Surface RT with 32GB SSD: $499, with 64GB: $599.