The application will give you instant information about the name, architecture, and clocks (core speed and multiplier) of each of your system's devices. Similarly, it will display information about the make and model of the device, screen resolution, and RAM memory.
CPU-Z also offers up battery details: level, state, temperature, voltage, etc. Best of all, and different from many similar applications, CPU-Z doesn't require any special permissions to access and show this information.
CPU-Z is an excellent hardware information tool for Windows, and now for Android as well. Although it's still in beta, the speed and precision with which it offers information makes it a fantastic program.