Asus P4C800-E - Manual (Page 86)

4-18 Chapter 4: BIOS Setup
4.4.3 Chipset
The Chipset menu items allow you to change the advanced chipset
settings. Select an item then press Enter to display the sub-menu.
Configure DRAM Timing by SPD [Enabled]
When this item is enabled, the DRAM timing parameters are set according
to the DRAM SPD (Serial Presence Detect). When disabled, you can
manually set the DRAM timing parameters through the DRAM sub-items.
Configuration options: [Disabled] [Enabled]
Performance Acceleration Mode [Auto]
Allows boost in system performance. Configuration options: [Auto]
[Enabled]
DRAM Idle Timer [Auto]
Configuration options: [Infinite] [0T] [8T] [16T] [64T] [Auto]
DRAM Refresh Mode [Auto]
Configuration options: [Auto] [15.6 uSec] [7.8 uSec] [64 uSec] [64T]
Select Screen
Select Item
+- Change Option
F1 General Help
F10 Save and Exit
ESC Exit
Advanced Chipset settings
WARNING: Setting wrong values in the sections below
may cause system to malfunction.
Configure DRAM Timing by SPD [Enabled]
Performance Acceleration Mode [Auto]
DRAM Idle Timer [Auto]
DRAm Refresh Rate [Auto]
Graphic Adapter Priority [AGP/PCI]
Graphics Aperture Size [ 64 MB]
Spread Spectrum [Enabled]
ICH Delayed Transaction [Enabled]
MPS Revision [1.4]
If the system becomes unstable after changing the settings of any of
the above items, revert to the default settings.