Asus P5Q-EM DO manual Pcie Frequency Auto, FSB Strap to North Bridge Auto, Dram Frequency Auto

PCIE Frequency [Auto]

Allows you to set the PCI Express frequency. Use the <+> and <-> keys to adjust the PCIE frequency. The values range from 100 to 180.

2.4.2FSB Strap to North Bridge [Auto]

When set to [Auto], the FSB Strap will be adjusted automatically by FSB Frequency and DRAM Frequency. Configuration options: [Auto] [200MHz] [266MHz] [333MHz]

2.4.3DRAM Frequency [Auto]

Allows you to set the DDR2 operating frequency.

Configuration options: [Auto] [DDR2-533 MHz] [DDR2-639 MHz] [DDR2-667 MHz] [DDR2- 800 MHz] [DDR2-887 MHz] [DDR2-1064 MHz]

The DRAM Frequency configuration options vary with the FSB Frequency item settings.

Selecting a very high DRAM frequency may cause the system to become unstable! If this happens, revert to the default setting.

2.4.4Configure DRAM Timing by SPD [Enabled]

Allows you to set the DRAM timing control. Configuration options: [Enabled] [Disabled]

2.4.5CPU Spread Spectrum [Auto]

Set to [Disabled] to enhance FSB overclocking ability or [Auto] for EMI control. Configuration options: [Auto] [Disabled]

2.4.6PCIE Spread Spectrum [Auto]

Set to [Disabled] to enhance PCIE overclocking ability or [Auto] for EMI control.Configuration options: [Auto] [Disabled]

2.4.7CPU Clock Skew [Auto]

Allows you to set the CPU clock skew.

Configuration options: [Auto] [Normal] [Delay 100ps] [Delay 200ps] [Delay 300ps] [Delay 400ps] [Delay 500ps] [Delay 600ps] [Delay 700ps] [Delay 800ps] [Delay 900ps] [Delay 1000ps] [Delay 1100ps] [Delay 1200ps] [Delay 1300ps] [Delay 1400ps] [Delay 1500ps]

2-18 Chapter 2: BIOS setup

P5Q-EM DO.indb 18

12/9/08 12:35:38 PM