What does an idle CPU do?

In the last post I said the fundamental axiom of OS behavior is that at any given time, exactly one and only one task is active on a CPU. But if there’s absolutely nothing to do, then what? It turns

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Fix System Idle Process High CPU Usage Windows 10/8/7 - MiniTool

Why Is The System Idle Process Hogging All The Resources?

PS99 idle CPU and GPU test because yes

Normal CPU Temperature While Gaming and Idle

Intel has a solution for high idle power on Intel Arc desktop GPUs

Reply to @pantslettuce My Idle CPU Temps! (AMD Ryzen 9 3900X) #cpu #am, Gaming Pc

What does an idle CPU do?

What does a CPU do when it's doing nothing?

CPU Idle - Download

Limiting powerconsumption in Desktop builds?

Solved Recall that the percentage of CPU idle time is given