In a document released by Microsoft, it has laid out the hardware and performance requirements that it hopes will ensure a minimum level of experience for Windows 8 tablets.
All device must support a minimum of five simultaneous touch inputs. All tablets should feature WLAN, at least one USB 2.0 port, a gyroscope, a three-axis accelerometer, and a magnetometer. The screen resolution for any tablet will be 1366×768.
Tablets built on the OS will also have to conform to a five hardware button policy – with all machines featuring buttons for power, rotation lock, Windows Key, and volume up and down controls for the required built-in speakers. Windows 8 tablets should support camera with a minimum resolution of 720p.
Microsoft requires that Windows 8 tablets with NFC technology should have ‘touch marks’ which will give users a fair idea about the location of the sensor. In short, it will avoid the clashing of devices. Windows key + Power key will now perform the function of Ctrl + Alt + Del for tablets without physical keyboards.
Out of the box, tablets will be expected to have at least 10GB of storage space available to users, as well as at least one USB 2.0 port.
You may download the requirements documents at Microsoft website.