Asus SP98-XV User Manual download pdf (Page 18)

18 ASUS SP98-N User’s Manual

3. HARDWARE SETUP

Motherboard Settings

3. IH/W SETUP

3. CPU to BUS Frequency Ratio (BF0, BF1, BF2)

These jumpers set the frequency ratio between the Internal frequency of the CPU

and the External frequency (called the BUS Clock) within the CPU. These must

be set together with the above jumpers CPU External (BUS) Frequency Selection.

4. CPU External Clock (BUS) (FS0, FS1, FS2) and PCI Frequency Selection (FS3)

These jumpers tell the clock generator what frequency to send to the CPU. These

allow 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).

SP98-N

CPU External Clock (BUS) Frequency Selection

FS3

PCI Frequency Selection

Synchronous PCI

Asynchronous PCI

Host

Sync PCI

Async PCI

FS1

FS0

FS2

50MHz

25MHz

32MHz

55MHz

27.5MHz

32MHz

60MHz

30MHz

32MHz

66.8MHz

33.4MHz

32MHz

75.9MHz

37.5MHz

32MHz

83.3MHz

41.7MHz

32MHz

FS3

Match the Mult. (Multiple) column

of the table on the opposite

page with these CPU types:

CPU A:AMD-K6-2, AMD-K6

CPU B:Intel Pentium P54C, AMD-K5

CPU C:Intel Pentium P55C, IBM/Cyrix

6x86MX, IBM/Cyrix M II

CPU D:IBM/Cyrix 6x86, IBM/Cyrix 6x86L

CPU E: IBM/Cyrix 6x86L

CPU A

CPU B

CPU C

CPU D

CPU E

4.0x(4/1)

—

1.5x(3/2)

BF1

BF2

BF0

BF1

BF2

BF0

3.0x(3/1)

—

BF1

BF2

BF0

2.5x(5/2)

1.0x(1/1)

2.0x(2/1)

BF1

BF2

BF0

2.0x(2/1)

4.5x(9/2)

—

1.5x(3/2)

BF1

BF2

BF0

BF1

BF2

BF0

3.5x(7/2)

1.5x(3/2)

3.5x(3/1)

3.0x(3/1)

—

CPU : BUS Frquency Multiple

WARNING! Do not overclock your processor. Overclocking can cause undue

stress on the CPU and motherboard. It may result in a slower speed or other

unpredictable outcomes. The table on the following page shows the approved

CPUs and their settings.

1 ... 17 18 19 ... 112

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Asus SP98-XV User Manual Page 18

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