CPU-Z is a freeware utility that provides some information on your CPU with which you can identify areas that may be optimized to improve the efficiency of your system. Some of the topics checked by this sofware include:

• 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