Why is CPU Vcore voltage sometimes a little bit lower than BIOS setting?
– Answer: To ensure better thermal and longer CPU lifespan, ASUS motherboards follow Intel loadline design specification, which defines a processor’s peak power and transient response requirements for its Voltage Regulator Module (VRM) or VR Down (VRD) logic. Unlike previous generation of processors, Vcore on a Pentium 4 (and the later Intel CPU) is not static and changes with CPU loading. The illustration below (captured from Intel processor datasheet) shows the deviation from the VID set point. That’s why the real CPU Vcore may be different from the BIOS setting. Notes: Adherence to this loadline specification is required by Intel to ensure reliable processor operation. For those who are into overclocking, ASUS provides an alternative in BIOS called Load-Line calibration or CPU voltage Damper option. With Load-Line calibration (or “CPU voltage Damper”) enabled, this load line slope will be modified to keep voltage stable. **Please take extra caution when changing the default setting.
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