Update BIOS to the latest stable version
Install CPU monitoring tools (CPU-Z, HWInfo, CoreTemp) and a stress test tool (Prime95, AIDA64, Cinebench)
Enter BIOS/UEFI setup
Set CPU core ratio/multiplier (manual mode)
Set CPU voltage mode to Manual/Fixed (avoid Auto)
Start with small multiplier increases (e.g., +1 step) and retest stability
Adjust CPU voltage only as needed to maintain stability
Set CPU power limits (if available) to motherboard-supported maximums (or high values)
Disable memory overclocking initially (set RAM to default JEDEC/XMP baseline) to isolate CPU stability
Set LLC/Load-Line Calibration to a moderate level (avoid extremes)
Set temperatures limits:
Configure thermal throttling/TJmax settings if available
Ensure cores stay below safe targets (commonly aim for <85°C under stress, if your cooling allows)
Save and reboot
Stress test (10–30 minutes) and monitor:
CPU temperatures
CPU throttling indicators
System stability (no crashes, errors, or WHEA logs)
If unstable:
Lower multiplier one step, or
Increase voltage slightly, or
Reduce LLC aggressiveness, then retest
If stable:
Increase multiplier again in small steps and repeat testing
When you reach a stable maximum:
Run a longer stress test (1–2 hours) and a benchmark (Cinebench) to confirm performance
Optional:
Enable undervolt/curve optimization (if supported) for better temps and stability
Re-enable XMP/DOCP for RAM after CPU stability is confirmed
If instability occurs after RAM changes:
Return RAM to default/XMP baseline and retest
Save a stable BIOS profile if your motherboard supports profiles
Record final settings (multiplier, voltage, LLC, power limits, RAM settings) for future reference