Intel 815 Micro-ATX Mainboard
HARDWARE SETUP
3-28
(F) SW1: FSB Clock Selection
SW1 is designed on the board to choose the CPU FSB clock (Front Side Bus
Clock). Basically, you don't have to worry about the FSB clock setting most of the
time, because it will be detected by the mainboard BIOS automatically. However,
sometimes you may feel like to select different FSB clock for some special
purpose. In this case, you may use the BIOS setting to select different FSB clock
or use the switch setting on SW1 to force your CPU to use the selected FSB clock.
(Please do not attempt to change this setting unless you are the technician)
..
SW1
CPU FSB CLOCK SELECTION
SW1-1 SW1-2 SW1-3 SW1-4
FSB
ON
OFF
OFF
ON
AUTO
OFF
ON
ON
OFF
66MHz
OFF
OFF
ON
OFF
100MHz
OFF
OFF
OFF
OFF
133MHz
Socket
370
+
U5
U12
Note:
1.
SW1 will have no function unless "Default" is selected in the "
CPU Host/PCI Clock / PC133
" selection field in the BIOS
setup program ( refer to Section. 4-11 ). Please do not to make
jumper setting on SW1 unless you are the professional
technician.
2.
When "Default" is selected, you may use SW1 to select
different speed of CPU clock and force your CPU to use that
clock speed instead of letting the system BIOS to select the
CPU clock automatically.
IMPORTANT NOTICE:
When you are changing the setting on SW1, please make sure to
remove the power core from the PC system. According to the i815
chipset feature, the PC system will hang up if you change the
setting without removing the power core.