Intel LGA775 User Manual page 43

BIOS SETUP
Memory Frequency For
This field sets the frequency of the DRAM memory installed. The
default setting is Auto. The other settings are DDR266,DDR320 and
DDR400.
System BIOS Cacheable
The setting of Enabled allows caching of the system BIOS ROM at
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 video performance. However, if
any program writes to this memory area, a system error may result.
Memory Hole At 15-16M
In order to improve performance, certain space in memory can be
reserved for ISA cards. This memory must be mapped into the memory
space below 16 MB. The choices are Enabled and Disabled.
AGP Aperture Size (MB)
The field sets aperture size of the graphics. The aperture is a portion of
the PCI memory address range dedicated for graphics memory address
space. Host cycles that hit the aperture range are forwarded to the AGP
without any translation. The default setting is 128M.
On-Chip VGA
The default setting is Enabled.
On-Chip Frame Buffer Size
The default setting is 8MB. The options available include 1MB, 8MB
and 16MB.
Boot Display
The default setting is CRT.
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