Base clock instability (BCLK)

What is BCLK-JITTER?

This high-severity issue affects the processor (CPU). The basic frequency generator on the board fluctuates. Reports of Base clock instability (BCLK) usually describe a sudden crash, brief unresponsiveness, or a stop-code screen appearing out of nowhere. The usual suspects are dried thermal paste, overclocking too aggressively, silicon degradation and weak power supply. Use the steps below to track down and fix the cause.

Common Causes

• Dried thermal paste
• Overclocking too aggressively
• Silicon degradation
• Weak power supply

Step-by-Step Fix Guide

• 1
  Improve cooling and repast

  The highest-success first step is Improve cooling and repast, which targets the most common trigger behind BCLK-JITTER.

• 2
  Increase LLC (Load-Line Calibration) in BIOS

  Should the issue continue afterward, the remaining steps are there to cover the less common cpu instability scenarios.

• 3
  Undervolting

  "Undervolting" is the next step worth ruling out for BCLK-JITTER.

Commands & Diagnostics

Frequently Asked Questions