How to know the specification of computer hardware

by using the software, we can find the computer hardware specifications that are used. There are several ways to find out is by using system properties, directx diagnostic tools, or use a third-party applications such as cpu-z, etc...

I. Using the DirectX diagnostic tool (congenital application windows)

If your computer no cpu-z, you can use this way
a. In the start menu select run, type dxdiag, and press OK
b. Wait until the dialog box appears DirectX Diagnostic Tool,
On the system tab there is information that is used OS, BIOS, Motherboard, Memory
On the Display tab there is information display device (VGA)
On another tab there is information device Sound, Network, etc.
c. The information display device (VGA)
II. This way better, than the first way, but you must have cpu-z applications on your computer.

A. If not, you can download it at http://www.cpuid.com/cpuz.php
click Download Latest version (to download the latest version)
b. Extract the downloaded file to unzip it (winrar). Click cpuz.exe to activate cpuz
c. Will appear the information about the CPU (processor), Main board, Memory (select the tab of each category to see the specification details)