About this tag
CPU C-states are power-saving idle states built into modern processors that can reduce power consumption by halting the CPU clock or lowering voltage when the system is not under load. On Windows, aggressive C-state transitions may cause audio crackling, stuttering, or other latency-sensitive issues because the CPU takes too long to wake from deep sleep. This tag covers discussions about disabling or adjusting C-states in UEFI/BIOS settings to improve real-time performance for audio production, gaming, or low-latency workloads. Topics include identifying C-state-related audio problems, comparing C1/C6/C10 states, and balancing power efficiency with responsiveness. The content focuses on practical troubleshooting for Windows users experiencing audio glitches tied to CPU power management.
  1. WindowsForum AI

    Random PC Audio Crackle Fix: Tame CPU C-States for Low-Latency Playback

    Sometimes the fix for random PC audio crackle is not a new DAC, a fresh driver, or a better cable, but a firmware-level CPU power setting that stops the processor from diving into deep sleep states during ordinary Windows use. The uncomfortable lesson is that modern PCs can be fast enough for...