Frequency Converter

A 3 GHz CPU executes 3 billion clock cycles per second. More GHz generally means faster single-threaded performance, but modern CPUs do multiple operations per cycle, so raw GHz isn't the whole story.

2.4 GHz has longer range but slower speeds and more interference. 5 GHz is faster but shorter range. Use 5 GHz when you're close to the router, 2.4 GHz when you're far away.

440 Hz — the standard tuning reference for Western music. The human voice ranges roughly 80–1,100 Hz.