Asus P2B-F III.HARDWARE SETUP, NOTE:, Jumpers, WARNING, Internal, External, CPU Bus Frequency, 3.CPU Bus Frequency Selection (FS0, FS1, FS2, FS3)

SETUP H/W .III

Jumpers

III.HARDWARE SETUP3.CPU Bus Frequency Selection (FS0, FS1, FS2, FS3)

This option tells the clock generator what frequency to send to the CPU, DRAM, and 440BX AGPset. 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 fre- quency (the advertised CPU speed).

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

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

BF3

BF2

BF1

BF0

BF3

BF2 BF1

BF0

BF3 BF2 BF1

BF0

BF3

BF2

BF1

BF0

BF3

BF2

BF1 BF0

BF3 BF2

BF1

BF0

BF3

BF2

BF1

BF0

1

1

1

1

1

1

2

2

2

2

2

2

3

3

3

3

3

3

2.0x (2/1)

2.5x (5/2)

3.0x (3/1)

3.5x (7/2)

4.0x (4/1)

4.5x (9/2)

5.0x (5/1)

BF3

BF2

BF1

BF0

BF3

BF2 BF1

BF0

BF3 BF2 BF1

BF0

BF3

BF2

BF1

BF0

BF3

BF2

BF1

BF0

BF3 BF2

BF1

BF0

1

1

1

1

1

2

2

2

2

2

3

3

3

3

3

5.5x (11/2)

6.0x (6/1)

6.5x (13/2)

7.0x (7/1)

7.5x (15/2)

8.0x (8/1)

CPU Core:BUS Frequency Multiple

FS3

FS2

FS1

FS0

FS3

FS2 FS1 FS0

FS3

FS2 FS1 FS0

FS3

FS2

FS1

FS0

FS3

FS2

FS1

FS0

FS3

FS2 FS1 FS0

FS3

FS2 FS1

FS0

FS3 FS2 FS1 FS0

1

1

1

1

1

1

1

1

2

2

2

2

2

2

2

2

3

3

3

3

3

3

3

3

66.8MHz

75.0MHz

83.3MHz

100.3MHz

103MHz

105MHz

110MHz

112MHz

CPU

33.4MHz

37.5MHz

41.65MHz

33.43MHz

34.33MHz

35MHz

36.67MHz

37.33MHz

PCI

FS3

FS2

FS1

FS0

FS3

FS2 FS1 FS0

FS3

FS2 FS1 FS0

FS3

FS2

FS1

FS0

FS3

FS2

FS1

FS0

FS3

FS2 FS1 FS0

FS3

FS2 FS1

FS0

FS3 FS2 FS1 FS0

1

1

1

1

1

1

1

1

2

2

2

2

2

2

2

2

P2B-F CPU Settings

3

3

3

3

3

3

3

3

115MHz

120MHz

124MHz

124MHz

133MHz

133MHz

140MHz

150MHz

CPU

38.33MHz

40MHz

31MHz

41.33MHz

33.3MHz

44.33MHz

35MHz

37.5MHz

PCI

CPU External Clock (BUS) Frequency Selection

WARNING! Frequencies above 100MHz exceed the specifications for the onboard Intel Chipset and are not guaranteed to be stable.

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

Intel CPU Model

Freq.

(CPU BUS Freq.)

(Freq. Multiple)

Ratio

BUS

F.

FS3

FS2

FS1

FS0

BF3 BF2 BF1 BF0 AGP

Pentium III

550MHz

5.5x

100MHz

[2-3] [1-2]

[1-2] [1-2]

[2-3] [1-2]

[1-2] [1-2] [1-2]

Pentium III

500MHz

5.0x

100MHz

[2-3] [1-2]

[1-2] [1-2]

[2-3] [1-2]

[1-2] [2-3] [1-2]

Pentium III/II

450MHz

4.5x

100MHz

[2-3] [1-2]

[1-2] [1-2]

[2-3] [1-2]

[2-3] [1-2] [1-2]

Pentium II/Celeron

400MHz

4.0x

100MHz

[2-3] [1-2]

[1-2] [1-2]

[2-3] [1-2]

[2-3] [2-3] [1-2]

Pentium II

350MHz

3.5x

100MHz

[2-3] [1-2]

[1-2] [1-2]

[2-3] [2-3]

[1-2] [1-2] [1-2]

Celeron

466MHz

7.0x

66MHz

[2-3] [2-3]

[1-2] [1-2]

[1-2] [2-3]

[1-2] [2-3] [2-3]

Celeron

433MHz

6.5x

66MHz

[2-3] [2-3]

[1-2] [1-2]

[1-2] [2-3]

[2-3] [1-2] [2-3]

Celeron

366MHz

5.5x

66MHz

[2-3] [2-3]

[1-2] [1-2]

[2-3] [1-2]

[1-2] [1-2] [2-3]

Pentium II/Celeron

333MHz

5.0x

66MHz

[2-3] [2-3]

[1-2] [1-2]

[2-3]

[1-2]

[1-2]

[2-3] [2-3]

Pentium II/Celeron

300MHz

4.5x

66MHz

[2-3]

[2-3]

[1-2]

[1-2]

[2-3]

[1-2]

[2-3]

[1-2]

[2-3]

Pentium II/Celeron

266MHz

4.0x

66MHz

[2-3]

[2-3]

[1-2]

[1-2]

[2-3]

[1-2]

[2-3]

[2-3]

[2-3]

Pentium II

233MHz

3.5x

66MHz

[2-3]

[2-3]

[1-2]

[1-2]

[2-3]

[2-3]

[1-2]

[1-2]

[2-3]

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

16 ASUS P2B-F User’s Manual