what is gigahertz
Gigahertz, generally abbreviated GHz, refers to frequencies in the billions of cycles per second range. Giga is the standard multiplier for 1 billion, and Hertz is the standard unit for measuring frequencies, expressed as cycles or occurrences per second. One GHz is equivalent to 1,000 megahertz . Most commonly, gigahertz is used when discussing computer performance or radio frequencies. In computers, it most often refers to the clock speed of the central processing unit ; the faster the CPU clock can tick, the faster, in general, the computer can process data and instructions.