Definition - What does Gigahertz (GHz) mean?
Gigahertz (GHz) s a frequency unit that measures the number of cycles per second. Hertz (Hz) refers to the number of cycles per second with periodic 1-second intervals. A megahertz (MHz) equals 1,000,000 Hz. A gigahertz is equal to 1,000 megahertz (MHz) or 1,000,000,000 Hz. Gigahertz is often used to measure central processing unit (CPU) clock speed. In general, higher CPU clock speeds indicate faster computers. That being said, speed-impacting factors include pipeline depth, instruction sets, internal cache, network/bus speed, disk performance and software design.
Techopedia explains Gigahertz (GHz)
One gigahertz equals 1,000,000,000 Hz or 1,000 MHz and has a frequency measurement with periodic 1-second cycles. A nanosecond is one-billionth of a second or one-thousandth of a microsecond. A nanosecond’s numeric order is 10 or 0.000000001. Hertz is based on total rotations per second, that is, one full second rotation equals 1 Hz. One kilohertz represents 1000 rotations per second. One megahertz represents 1 million rotations per second. One gigahertz represents 1 billion cycles per second. Clock speed, which is also measured in hertz, refers to synchronous circuit clock frequency, for example, a CPU. One clock lasts only 1 nanosecond and toggles between 0 and 1. Modern and non-embedded CPUs may have a single clock cycle of less than 1 nanosecond. CPU megahertz usually refers to clock rate, frequency or speed. Clock rate is gauged by a crystal oscillator which generates highly accurate and unwavering electrical and clock signals; stabilizes receivers and frequencies; and tracks time. The oscillator circuit brings its crystal a small amount of electricity every nanosecond, which is measured in hertz.
Join thousands of others with our weekly newsletter
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.