Asus Z87-C - Manual (Page 63)

Chapter 2: BIOS information 2-17
DO NOT remove the thermal module. The thermal conditions should be monitored.
CPU Voltage Frequency [Auto]
Frequency switching affects the VRM transient response and the thermal component
conditions. Higher frequency gets quicker transient response.
Configuration options: [Auto] [Manual]
DO NOT remove the thermal module when setting this item to [Manual Mode]. The thermal
conditions should be monitored.
The following item appears only when you set the CPU Voltage Frequency to [Manual].
CPU Fixed Frequency [250]
This item allows you to set a fixed CPU Voltage frequency. Use the <+> or <-> keys to
adjust the value. The values range from 300kHz to 500kHz with a 50kHz interval.
The following items appear only when you set the CPU Voltage Frequency to [Auto].
VRM Spread Spectrum [Disabled]
Enable the VRM Spread Spectrum to enhance system stability.
Configuration options: [Disabled] [Enabled]
CPU Power Phase Control [Standard]
Allows you to set the power phase control of the CPU.
Configuration options: [Standard] [Optimized] [Extreme]
DO NOT remove the thermal module when setting this item to [Extreme]. The thermal
conditions should be monitored.
CPU Power Duty Control [T.Probe]
DIGI + VRM Duty Control adjusts the current of every VRM phase and the thermal conditions
of every phase component.
[T. Probe]
Select to maintain the VRM thermal balance.
[Extreme] Select to maintain the current VRM balance.
DO NOT remove the thermal module. The thermal conditions should be monitored.
CPU Current Capability [Auto]
DIGI+ VRM CPU Current Capability provides wider total power range for overclocking.
A higher value setting gets higher VRM power consumption delivery and extends the
overclocking frequency range simultaneously.
Configuration options: [Auto] [100%] [110%] [120%] [130%] [140%]