CPU-Z is freeware that gathers information on some of the main devices of your system. CPU-Z does not need to be installed. Just unzip the files in a directory and run the .exe. In order to remove the program, just delete the files, and that’s it.
CPU
Name and number.
Core stepping and process.
Package.
Core voltage.
Internal and external clocks, clock multiplier.
Supported instruction sets.
Cache information.

Mainboard
Vendor, model and revision.
BIOS model and date.
Chipset (northbridge and southbridge) and sensor.
Graphic interface.



Memory

Frequency and timings.
Module(s) specification using SPD (Serial Presence Detect) : vendor, serial number, timings table.

System
Windows and DirectX version