CPU-G is a very simple GUI utility that fetches hardware related information of your Ubuntu PC (GNU/Linux in general actually), not just the CPU. But please remember that this app is at its beta stage (most likely not in active development) and it’s not an advanced hardware details “fetcher” by any means.
I have a really old CPU in my Laptop and the CPU-G did a decent job of fetching some information out of it yet things like L1/L2 cache details are “missing”. I don’t know if that’s because the CPU is old which is highly unlikely since this utility just uses the GNU/Linux Kernel for getting that data and as long as the Kernel supports your CPU… it should get that info as far as I know.
Anyhow… not just CPU related information, CPU-G actually has the ability to let you know things such as:
*. CPU related things -- Manufacture, processor family, speed, model, stepping, instruction sets (32/64-bit), cache, etc.
*. Motherboard related data -- Vendor, Model and few BIOS related information.
*. Few RAM related data -- Actual RAM, used amount, free amount, cached amount, etc.
*. System information -- This shows things like your current OS version, Kernel version, GCC (GNU C compiler -- GCC is kind of a big deal with GNU/Linux), Uptime, etc.
You can install CPU-G in Ubuntu 11.10 Oneiric Ocelot, 11.04 Natty Narwhal, 10.10 and 10.04 by using the below command in your Terminal window.
sudo apt-get install cpu-g
Yup, that should do it.