CPU-Z is a program that gathers information on some of the main devices of your system. CPU. Name and number. Core stepping and process. Package. Core voltage. Internal and external clocks, clock multiplier. Supported instructions sets. Cache information. Mainboard. Vendor, model and revision. BIOS model and date. Chipset (northbridge and southbridge) and sensor. Graphic interface. Real time measurement of each core's internal frequency, memory frequency.