This is what I like when using Linux. You can identification hardware specs your PC only by type command on terminal without install any program.
To identification your hardware on Ubuntu just type this command on Terminal:
lshw (Hardware Lister) is a small tool to provide detailed information on the hardware configuration of the machine. It can report exact memory configuration, firmware version, mainboard configuration, CPU version and speed, cache configuration, bus speed, etc. on DMI-capable x86 or EFI (IA-64) systems and on some PowerPC machines.