Intel 815 Micro-ATX Mainboard
AWARD BIOS SETUP
4-11
AGP Graphic Aperture Size:
( default setting : “64M” )
This field allows you to select the size of Accelerated Graphics Port (AGP)
aperture. 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.
System Memory Frequency:
( default setting : “100MHz” )
Intel i815 chipset supports PC-100 and PC-133 DIMM modules. Basically,
different setting in the CMOS setup program will decide the memory speed. This
selection field allows you to select the frequency of the system memory. There are
three different choices in the CMOS setup program, please refer to the following
for the details:
AUTO
: The system BIOS will read the memory chip information stored in the SPD
chip on the DIMM module and then decide the speed of memory frequency
automatically.
100MHz
: No matter what kind of DIMM module is installed on the mainboard, the
system BIOS will force the PC system running at 100 MHz.
133MHz
: When 133MHz FSB CPU is installed on mainboard, no matter what kind
of DIMM module is installed on the board, system BIOS will force PC
system running at 133 MHz. However, when 100MHz or 66MHz CPU is
installed on mainboard, the memory frequency will be fixed at 100MHz
no matter what kind of DIMM module is installed on the mainboard.
Note
: There are some limitation when installing DIMM modules on the mainboard
made by i815 chipset. Please refer to the following table when installing the
SDRAM DIMM module:
System Memory Frequency Setting in CMOS
DIMM MODULES
AUTO
100 MHz
133 MHz
PC-100 Single-side * 1
OK
OK
Not supported
PC-100 Single-side * 2
OK
OK
Not supported
PC-100 Double-side * 1
OK
OK
Not supported
PC-100 Double -side * 2
OK
OK
Not supported
PC-133 Single-side * 1
OK
OK
OK
PC-133 Single-side * 2
OK
OK
OK
PC-133 Double-side * 1
OK
OK
OK
PC-133 Double-side * 2
OK
OK
OK