Asus SP97-V - Manual (Page 16)

16 ASUS SP97 / SP97-V User’s Manual
III. INSTALLATION
(Jumpers)
III. INST
ALLA
TION
2. CPU External (BUS) Frequency Selection (FS0, FS1, FS2)
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
times the BUS Ratio equals the CPU’s Internal frequency (the advertised CPU speed).
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.
CPU : BUS Frequency Ratio
1
2
3
R
BF1 BF2 BF0 BF1 BF2 BF0 BF1 BF2 BF0 BF1 BF2 BF0 BF1 BF2 BF0 BF1 BF2 BF0
Match the table’s
Ratio column to
these CPU types:
3.0x(3/1)
3.0x(3/1)
----
----
3.0x(3/1)
----
2.5x(5/2)
2.5x(5/2)
1.0x(1/1)
2.0x(2/1)
2.5x(5/2)
2.0x(2/1) 2.0x(2/1)
2.0x(2/1)
2.0x(2/1)
2.0x(2/1)
2.0x(2/1)
2.0x(2/1) 1.5x(3/2)
3.5x(7/2)
3.0x(3/1)
3.0x(3/1)
3.5x(7/2)
----
CPU A
CPU B
CPU C
CPU D
CPU E
CPU F ----
----
----
----
4.0X(4/1)
1.5x(3/2)
----
----
----
----
(4.5X)(9/2)
1.5x(3/2)
CPU External Clock (BUS) Frequency Selection
75MHz
1 2 3
FS1
FS0
FS2
FS3
1
2
3
66MHz
1 2 3
FS1
FS0
FS2
FS3
1
2
3
60MHz
1 2 3
FS1
FS0
FS2
FS3
1
2
3
50MHz
FS1
FS0
FS2
1 2 3 FS3
1
2
3
Sync Sync Sync ASync
WARNING! Do not overclock your processor. Overclocking can cause
excess stress on the CPU and motherboard. It may produce a slower speed or
other unexpected results. The next table shows approved CPUs and settings.