CPU-Z Portable doesn't need to be installed; a window will open just by executing it, containing all the data on your computer. From the CPU section, you can check information on your processor, including technical specs, speed, and voltage. You can also check the motherboard information, the manufacturer, the BIOS version, graphic card, memory brand, Windows and DirectX versions.
Now you'll always know your computer's details when you need to replace a part or fix it.
Doesn't require installation