Acer AR360 F1 - Manual (Page 100)

4 System BIOS 84
Processor & Clock Options
This submenu displays the status of the processor as detected by the
BIOS, including items such as the processor manufacturer, type,
frequency, CPUID, Microcode Revision, Cache L1/L2/L3, Ratio Status,
and Ratio Actual Value. The submenu also allows you to configure the
processor and clock settings.
Ratio to CMOS Setting: Select Manual to manually configure the CPU
Ratio. Select Auto to allow the BIOS to automatically configure the
CPU Ratio based on the processor installed on the motherboard.
C1E Support: Select Enabled to use the feature of Enhanced Halt State.
C1E significantly reduces the CPU's power consumption by reducing
the CPU's clock cycle and voltage during a Halt State.