Asus P-P55TVP4 User Manual page 16

6. CPU External (BUS) Frequency Selection (JP1, JP2, JP3)
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).
7. CPU to BUS Frequency Ratio (JP5, JP6)
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.
Set the jumpers by the Internal speed of the Intel, AMD, or Cyrix CPU as follows:
CPU Model
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
Intel Pentium
AMD-K6-PR233
AMD-K6-PR200
AMD-K6-PR166
AMD-K5-PR133/100 100MHz
AMD-K5-PR120/90
AMD-K5-PR75
IBM/Cyrix 6x86MX-PR233 200MHz
IBM/Cyrix 6x86MX-PR200 166MHz
IBM/Cyrix 6x86MX-PR166 150MHz
*IBM/Cyrix -PR166+
*NOTE: The only IBM/Cyrix 6x86(L) (or M1) that is supported on this motherboard is rev 2.7 or later.
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III. INSTALLATION
1
2
3
50MHz 55MHz
CPU External Clock (BUS) Frequency Selection
1.5 x 2.0 x
CPU : BUS Frequency Ratio (1.5x, 2.0x, 2.5x, 3.0x)
Freq. Ratio BUS Freq.
233MHz 3.5x 66MHz
200MHz 3.0x 66MHz
166MHz 2.5x 66MHz
150MHz 2.5x 60MHz
133MHz 2.0x 66MHz
120MHz 2.0x 60MHz
100MHz 1.5x 66MHz
90MHz 1.5x 60MHz
75MHz 1.5x 50MHz
233MHz 3.5x 66MHz
200MHz 3.0x 66MHz
166MHz 2.5x 66MHz
1.5x 66MHz
90MHz 1.5x 60MHz
75MHz 1.5x 50MHz
3.0x 66MHz
2.5x 66MHz
2.5x 60MHz
133MHz 2.0x 66MHz
ASUS P/I-P55TVP4 User's Manual
1
1 1
2
2 2
3
3 3
60MHz 66MHz
2.5 x 3.0 x
(BUS Freq.) (Freq. Ratio)
JP3 JP2 JP1 JP6
[2-3] [1-2] [2-3] [1-2] [1-2]
[2-3] [1-2] [2-3] [1-2] [2-3]
[2-3] [1-2] [2-3] [2-3] [2-3]
[2-3] [2-3] [1-2] [2-3] [2-3]
[2-3] [1-2] [2-3] [2-3] [1-2]
[2-3] [2-3] [1-2] [2-3] [1-2]
[2-3] [1-2] [2-3] [1-2] [1-2]
[2-3] [2-3] [1-2] [1-2] [1-2]
[2-3] [2-3] [2-3] [1-2] [1-2]
[2-3] [1-2] [2-3] [1-2] [1-2]
[2-3] [1-2] [2-3] [1-2] [2-3]
[2-3] [1-2] [2-3] [2-3] [2-3]
[2-3] [1-2] [2-3] [1-2] [1-2]
[2-3] [2-3] [1-2] [1-2] [1-2]
[2-3] [2-3] [2-3] [1-2] [1-2]
[2-3] [1-2] [2-3] [1-2] [2-3]
[2-3] [1-2] [2-3] [2-3] [2-3]
[2-3] [2-3] [1-2] [2-3] [2-3]
[2-3] [1-2] [2-3] [2-3] [1-2]
JP5