Asus 810 user manual CPU External Frequency Setting DSW, Dsw

Motherboard Settings

3. H/W SETUP

3.HARDWARE SETUP

8)CPU External Frequency Setting (DSW)

This option tells the clock generator what frequency to send to the CPU, DRAM, and the PCI bus. This allows the selection of the CPU’s External frequency. The CPU External Frequency multiplied by the Frequency Multiple equals the CPU’s Internal frequency (the advertised CPU speed). NOTE: You may set the memory speed independently from the CPU External Frequency. Depending on your memory type, select the appropriate “SDRAM” speed along with the appropri- ate “CPU” speed.

NOTE: For JumperFree mode, all dip switches (DSW) must be set to OFF.

DSW		ON	ON	ON
		1 2 3 4 5	1 2 3 4 5	1 2 3 4 5
CPU	→	66MHz	75MHz	83MHz
SDRAM →		100MHz	112MHz	124MHz
		ON	ON	ON
		1 2 3 4 5	1 2 3 4 5	1 2 3 4 5

CUW		→		100MHz		100MHz		112MHz
	CPU
	SDRAM →			150MHz		100MHz		112MHz
			ON		ON		ON

CUW CPU External Clock			1 2 3 4 5	1 2 3 4 5		1 2 3 4 5
		→
(BUS) Frequency Selection	CPU		124MHz		133MHz		150MHz
	SDRAM →		124MHz		133MHz		150MHz

(JumperFree Mode)

NOTE: Frequency Multiple settings are not available here because usually Socket 370 processors have locked Frequency Multiples. If your processor does not have a locked Frequency Multiple, you must use CPU Core:Bus Freq. Mul- tiple 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.

WARNING! CPU frequencies above 66MHz exceed the specifications for cur- rent Celeron processors and are not guaranteed to be stable. For Coppermine pro- cessors, CPU frequencies other than the recommended bus frequencies are not guaranteed to be stable. Premature wearing of the processor may result when overclocking. Be sure that the DIMM you use can handle the specified SDRAM MHz or else bootup will not be possible.

22 ASUS CUW User’s Manual