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I570 Motherboard User Manual
47
DRAM Data Integrity
This BIOS feature controls the ECC feature of the memory controller. ECC,
which stands for Error Checking and Correction , enables the memory
controller to detect and correct single-bit soft memory errors. The memory
controller will also be able to detect double -bit errors although it will not be able
to correct them. This provides increased data integrity and system stability.
However, this feature can only be en abled if you are using special ECC
memory modules.
MGM Core Frequency
This field sets the frequency of the DRA M memory installed. The default
setting is Auto Max 266MHz.
System BIOS Cacheable
The setting of Enabled allows caching of the system BIOS ROM a t
F000h-FFFFFh, resulting in better system performance. However, if any
program writes to this memory area, a system error may result.
Video BIOS Cacheable
The Setting Enabled allows caching of the video BIOS ROM at
C0000h-F7FFFh, resulting in better vid eo performance. However, if any
program writes to this memory area, a system error may result.
Memory Hole At 15M -16M
In order to improve performance, certain space in memory can be reserved for
ISA cards. This memory must be mapped into the memory spac e below 16
MB. The choices are Enabled and Disabled.
Delayed Transaction
It's highly recommended that you enable Delayed Transaction for better PCI
performance and to meet PCI 2.1 specifications. Disable it only if your PCI
cards cannot work properly with this option or if you are using an ISA card that
is not PCI 2.1 compliant.
Delay Prior to Thermal
The Delay Prior To Thermal BIOS feature controls the activation of the
Thermal Monitor's automatic mode. It allows you to determine when the
Pentium 4's Thermal Monitor should be activated in automatic mode after the
system boots. For example, with the default value of 16 Minutes, the BIOS
activates the Thermal Monitor in automatic mode 16 minutes after the system
starts booting up.
AGP Aperture Size(MB)
This BIOS feature allows you to select the size of the AGP aperture. The
aperture is a portion of the PCI memory address range dedicated as graphics
memory address space. Host cycles that hit the aperture range are forwarded
to the AGP without need for transl ation. The aperture size also determines the
maximum amount of system RAM that can be allocated to the graphics card
for texture storage. The default setting is 64MB.