SpeccySpeccy is an advanced System Information tool for your PC, from the developers of CCleaner and Recuva.
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Author's description:
At first glance, Speccy may seem like an application for system administrators and power users. It certainly is, but Speccy can also help normal users, in everyday computing life.
If you need to add more memory to your system, for example, you can check how many memory slots your computer has and what memory's already installed. Then you can go out and buy the right type of memory to add on or replace what you've already got.
If you're going to be selling your PC, you can use Speccy to quickly list out the components. Or, if you're buying a PC, you can use Speccy to check that the computer has what the label says it has.
Also, Speccy comes in handy for support. If you're on the phone with technical support and they want to know what video card you have installed, there's no need to hunt around Windows. Speccy has all the information on one easy-to-understand screen.
Operating System compatibility: all versions of MS Windows from Windows 98 up to Vista and Windows 7, including both 32-bit and 64-bit
License: Freeware
Advantages:
Small and fast
Program is just a single executable file
It provides a lot of information about the hardware of the PC in a clear way
Website:
http://www.piriform.com/speccy