CPU-Z is a freeware that gathers information on some of the main devices of your system. :
*Processor name and vendor
*Core stepping and process
*Processor package
*Processor current core voltage
*Internal and external clocks, clock multiplier
*Partial overclock detection
*Processor features, including supported instructions sets.
*L1 and L2 cache informations : location, size, speed, technology.
*Motherboard informations : BIOS, chipset, memory, AGP.
