Asus CUA266 - Manual (Page 19)

ASUS CUA266 User’s Manual 19
3. HARDWARE SETUP
3. H/W SETUP
Motherboard Settings
2) CPU External Frequency Selection (DIP_SW Switches 1–4)
This option tells the clock generator what frequency to send to the CPU and
SDRAM. This allows the selection of the CPU’s External frequency (or BUS
Clock). The BUS Clock multiplied by the Frequency Multiple equals the CPU’s
Internal frequency (the advertised CPU speed).
WARNING! Set the CPU frequency only to the recommended settings. Frequencies
other than the recommended CPU bus frequencies are not guaranteed to be stable.
Overclocking the processor is not recommended. It may result in a slower speed.
CUA266
0 1 0 1
CUA266 CPU External
Frequency Selection
DSW
ON
12
34
ON
12
34
ON
12
34
133MHz
133MHz 66MHz
100MHz
100MHz
100MHz CPU
SDRAM
→
→
3) SDRAM Voltage Selection (JP25V)
This jumper allows you to select the specific voltage supplied to the DDR DIMMs
for overclocking. The setting 1-2 allows for +2.5V, while setting 2-3 allows for
+2.6V. The default setting is 2.5V.
CUA266 JP25V
CUA266
0 1 0 1
+2.6V +2.5V
1 2 2 3
JP25V
WARNING! Using a higher voltage may help when overclocking but may result
in shortening the computer components life. It is receommended that you keep
this jumper to its default setting.