When trying to determine the hardware specifications for your computer, it is not desirable to open the hardware casing, which, in some cases, can lead to loosing your warranty claim (e.g., in the case of laptops). In such a scenario, one can use some handy tools for determining the installed hardware specifications. i-Nex is one such tool that provides detailed hardware information within a Graphical User Interface (GUI) for Ubuntu.
i-Nex is written in Gambas, which is, “A Graphical Development Environment based on a basic Interpreter, with object extensions.” The program works pretty much like CPU-Z. i-Nex comes separated in numerous tabs, with each tab providing information regarding a specific system component. As visible from the screenshot below, you can get detailed information about the CPU, Motherboard/BIOS, Sound and Graphics card, as well as other components such as the Kernel, Memory, Network etc, by clicking the respective tabs. To move across tabs, use the left/right arrow buttons. i-Nex is capable of displaying precise information about a system, including the manufacturer’s name, model number, processors cache information, hard drive sectors, RAM information (total, used, free, shared, buffers, cached and swapped), host name of the system, operating system version, time zone (being used), and more.
You can also check out similar Ubuntu tools for listing hardware information, including HardInfo and dmidecode. You may install i-Nex for your Ubuntu version, from the packages available at Launchpad. The packages are available for all latest Ubuntu versions, including Oneiric Ocelot and Precise Pangolin.