Asus P2L97 III.INSTALLATION, WARNING, Internal, External, CPU Bus Frequency, 3.CPU Bus Frequency (FS0, FS1, FS2), 4.CPU Core:BUS Frequency Multiple (BF0, BF1, BF2, BF3)

INSTALLATION .III (Jumpers)

III.INSTALLATION3.CPU Bus Frequency (FS0, FS1, FS2)

This option tells the clock generator what frequency to send to the CPU. This allows the selection of the CPU’s External frequency (or BUS Clock). The BUS Clock multiplied by the BUS Ratio equals the CPU’s Internal frequency (the advertised CPU speed).

4.CPU Core:BUS Frequency Multiple (BF0, BF1, BF2, BF3)

This option sets the frequency ratio between the Internal frequency of the CPU and the CPU’s External frequency. These must be set in conjunction with the CPU Bus Frequency.

FS2 FS1	FS0	FS2 FS1 FS0		FS2	FS1 FS0	FS2 FS1 FS0
	1		1		1		1
	2		2		2		2
	3		3		3		3
60MHz		66MHz		75MHz		83MHz
CPU Bus Frequency
1 2	3	1 2	3		1 2	3	1 2	3	1 2	3
	BF3			BF3		BF3		BF3		BF3
	BF2			BF2		BF2		BF2		BF2
P2L97 CPU Jumpers	BF1			BF1		BF1		BF1		BF1
	BF0			BF0		BF0		BF0		BF0
2.0x(2/1)		3.5x(7/2)			4.0x(4/1)		4.5x(9/2)		5.0x(5/1)

CPU Core:Bus Frequency Multiple

WARNING! Frequencies above 66MHz exceed the specifications for the onboard Intel Chipset and are not guaranteed to be stable.

Intel Pentium II Processor in an SEC Cartridge (233-333MHz)

Set the jumpers by the Internal speed of your processor as follows:

CPU Model	Freq.				(BUS Freq.)				(Freq.	Ratio)
		Ratio	BUS F.	FS2		FS1	FS0	BF3	BF2	BF1	BF0
Intel Pentium II	333MHz	5.0x	66MHz	[1-2] [1-2] [1-2]				[2-3]	[1-2] [1-2] [2-3]
Intel Pentium II	300MHz	4.5x	66MHz	[1-2]		[1-2]	[1-2]	[2-3]	[1-2]	[2-3]	[1-2]
Intel Pentium II	266MHz	4.0x	66MHz	[1-2]		[1-2]	[1-2]	[2-3]	[1-2]	[2-3]	[2-3]
Intel Pentium II	233MHz	3.5x	66MHz	[1-2]		[1-2]	[1-2]	[2-3]	[2-3]	[1-2]	[1-2]

NOTES: Overclocking your processor is not recommended. It may result in a slower speed. Voltage Regulator Output Selection (VID) is not needed for the Pentium II processor because it sends a VID signal directly to the onboard power controller.

14 ASUS P2L97 User’s Manual