A technician is selecting a processor for a custom PC. Which of the following units would be used to compare the speed of the various processors?

Gigahertz (GHz) is the standard unit used to measure the clock speed of a processor, indicating the number of cycles per second the CPU performs. A higher GHz generally implies a faster processor (though architecture and core count also play significant roles).

Megahertz (MHz) is also a unit of frequency (millions of cycles per second), but modern processors are typically measured in gigahertz (billions of cycles per second), making MHz less relevant for current comparisons.

Gigabytes per second (GBps) measures data transfer rates, typically for storage or memory bandwidth, not processor speed.

Megabytes per second (MBps) also measures data transfer rates, similar to GBps but at a smaller scale, and is not used for processor speed comparison.