CPU-Z is a freeware 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. Memory Frequency and timings. Module(s) specification using SPD (Serial Presence Detect) : vendor, serial number, timings table.