Asus X900-PI - Manual (Page 20)

20 ASUS P3C-E User’s Manual
3. HARDWARE SETUP
Motherboard Settings
3. H/W SETUP
6) CPU External Frequency Setting (DSW-1, -2, -3, -4, -5)
This option tells the clock generator what frequency to send to the CPU and the
PCI bus. This allows the selection of the CPU’s External frequency.
IMPORTANT:
1. In JumperFree mode, all dip switches (DSW-1–DSW-5) must be set to OFF.
2. When JumperFree mode is enabled, use BIOS setup in place of these switches
(see CPU Speed in Advanced Menu in BIOS Setup).
NOTE: Only selected switches are illustrated. For a complete frequency listing,
see next page.
DSW
(SW2)
CPU
PCI
→
→
103MHz
34.3MHz
105MHz
34.9MHz
100MHz
33.6MHz
ON 12345 ON 12345
CPU
PCI
→
→
138MHz
34.5MHz
133.9MHz
33.4MHz
ON 12345 ON 12345
P3C-E CPU External Clock
(BUS) Frequency Selection
(JumperFree Mode)
ON 12345
ON 12345
P3C-E
NOTE: If your processor does not have a locked Frequency Multiple, you must
use CPU Core:Bus Freq. Multiple in 4.4 Advanced Menu of the BIOS setup
to set the Frequency Multiple. If the Frequency Multiple is locked, setting the
Frequency Multiple in BIOS setup will have no effect.