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Disabling Overclocking: A Systematic Approach to Forced Operational Compliance in x86_64 and ARM Architectures

Author: Systems Security & Hardware Integrity Working Group
Date: April 2026

2. Threat Model for Unwanted Overclocking

We assume a scenario where an adversary (or an unaware user) might re-enable overclocking after initial lockdown. Attack vectors include: how to disable overclocking

• BIOS/UEFI tampering: Flashing modified firmware that exposes hidden OC menus.
• OS-level tools (Intel XTU, MSI Afterburner, Ryzen Master).
• MSR writes from kernel code or malicious drivers.
• PLL (Phase-Locked Loop) reconfiguration via SMBus or PCIe config space.
• Voltage regulator (VR) controller reprogramming (e.g., via I2C/SVID).

Thus, a complete disable must address persistent state, runtime policy, and physical/jumper protection. Thus, a complete disable must address persistent state,

4. OS-Level Controls and Power Management

• Windows:
  • Power Options: Create a power plan with Maximum processor state = 99% to disable Turbo Boost (Intel) while keeping normal clocks (or 100% with Turbo enabled).
  • Disable vendor tuning software (Intel XTU, Ryzen Master).
• Linux:
  • Use cpufreq governors — set governor to “performance” for max stock frequency or “ondemand/powersave” for limits.
  • To disable turbo: echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo (Intel) or write to the amd equivalent.
  • Use tuned/profile or systemd services to enforce settings at boot.
• macOS:
  • Macs have limited user overclocking; use energy saver and keep SMC/NVRAM defaults.

Step 3: Reset CPU Ratio/Multiplier to Auto

The CPU’s speed is determined by Base Clock (BCLK) x Multiplier (Ratio) . Overclocking usually raises the multiplier. turn off “GPU Tuning

• Find the setting labeled CPU Core Ratio, CPU Multiplier, or CPU Frequency.
• If it is set to a specific number (e.g., 50x, 48x), change it to Auto.
• For Intel K-series or AMD Ryzen: Look for Per-Core Ratio or Turbo Boost Ratio and set them back to Auto.

1. Why Disable Overclocking? (Symptoms You May Be Seeing)

Before diving into the how, let’s confirm why you need to disable overclocking. Common symptoms include:

• Random system crashes or freezes (especially during gaming or rendering).
• Blue Screen of Death (BSOD) with error codes like WHEA_UNCORRECTABLE_ERROR, CLOCK_WATCHDOG_TIMEOUT, or IRQL_NOT_LESS_OR_EQUAL.
• Failure to boot (PC powers on but screen stays black).
• Excessive heat (CPU/GPU above 90–100°C under load).
• Applications closing unexpectedly without error messages.
• Artifacts or graphical glitches (flashing polygons, strange colors).

Note: If you never intentionally overclocked, your PC might still have automatic overclocking enabled (e.g., Intel Turbo Boost, AMD Precision Boost Overdrive, or motherboard "Game Boost" features).

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For AMD GPUs (Adrenalin Software)

1. Open AMD Radeon Software → Performance → Tuning.
2. If “Manual Tuning” is enabled, click “Reset” or switch to “Default” .
3. Alternatively, turn off “GPU Tuning,” “VRAM Tuning,” and “Power Tuning.”