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How to fix AMD Infinity Fabric Instability (FCLK)

Error code: AMD-FCLK-INFINITY-ERR

What this error means

AMD systems crash or become unstable due to out of sync FCLK (Infinity Fabric clock) and MEMCLK. Another common trigger is weak RAM modules with XMP above DDR5-6000.

Updated

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 3 complete
01Set FCLK = MEMCLK / 2 (for DDR4) or FCLK = MEMCLK / 2 (DDR5)
  1. Set FCLK = MEMCLK / 2 (for DDR4) or FCLK = MEMCLK / 2 (DDR5)
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Increase the SOC voltage to 1.1-1.15V
  1. Increase the SOC voltage to 1.1-1.15V
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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03Limit RAM to DDR4-3600 or DDR5-6000 for the most stable FCLK 1800/3000
  1. Limit RAM to DDR4-3600 or DDR5-6000 for the most stable FCLK 1800/3000
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

  • FCLK set higher than 2000 MHz without sufficient SOC power
  • FCLK and MEMCLK mismatch (optimum is 1:1 ratio)
  • Weak RAM modules with XMP above DDR5-6000