User guide

ASUS M5A97 3-9
Chapter 3
CPU Ratio [Auto]
Allows user can manually adjust the maximum non-CPB mode CPU ratio. The value will be
limit to CPU base or factory setting. Use the <+> and <-> keys to adjust the ratio. The valid
value ranges vary according to your CPU model.
Memory Frequency [Auto]
Allows you to set the DDR3 operating frequency. Conguration options: [Auto] [800MHz]
[1066MHz] [1333MHz] [1600MHz]
Selecting a very high DRAM frequency may cause the system to become unstable! If this
happens, revert to the default setting.
CPU/NB Frequency [Auto]
Allows you to set the ratio between the NB (in CPU) Clock and the CPU Bus Frequency.
Conguration options: [Auto] [1400MHz] [1600MHz] [1800MHz] [2000MHz]
HT Link Speed [Auto]
Allows you to select the HyperTransport link speed. Conguration options: [Auto] [800MHz]
[1000MHz] [1200MHz] [1400MHz] [1600MHz] [1800MHz] [2000MHz]
CPU Spread Spectrum [Auto]
[Auto] Automatic conguration.
[Disabled] Enhances the BCLK overclocking ability.
[Enabled] Sets to [Enabled] for EMI control.
PCIe Spread Spectrum [Auto]
[Auto] Automatic conguration.
[Disabled] Enhances the PCIE overclocking ability.
[Enabled] Sets to [Enabled] for EMI control.
EPU Power Saving Mode [Disabled]
Allows you to enable or disable the EPU power saving mode. Conguration options: [Enabled]
[Disabled]
EPU Setting [Auto]
This item appears only when you set the EPU Power Saving Mode to [Enabled] and allows
you to select the power saving mode. Congurations options: [Auto] [Light Power Saving
Mode] [Medium Power Saving Mode] [Max Power Saving Mode].
DRAM Timing Control
The conguration options for some of the following items vary depending on the DIMMs
you install on the motherboard.
DRAM CAS# Latency [Auto]
You can key in the desired value using the numeric keypad. The values range from 4 to 12.