the.com/hardware cycles
the pulse a chip lives by, ticking so fast it makes patience look quantum.
means a hardware cycle is one tick of a processor's clock, the smallest unit of time in which a chip can do a basic operation.
from comes from digital electronics design, where a crystal oscillator generates a steady square wave and every rising edge triggers circuits to latch new values, giving engineers a universal metronome to synchronize logic gates.
speed scalemodern cpus tick billions of times per second
clock speedgigahertz literally means billion cycles per second
not equal workone instruction can take many cycles, not one
heat tradeofffaster cycles mean exponentially more power drawn
for instance
intel 4004 — 1971 chip ran at roughly 740 kilohertz
apple m1 — 2020 chip hits about 3.2 gigahertz efficiently
ibm z16 — mainframe cycles near 5.5 gigahertz for banks
overclocked 9950x3d — enthusiasts push cycles past 6 gigahertz