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ASUS A7V User’s Manual 21
3. HARDWARE SETUP
3. H/W SETUP
Motherboard Settings
6) CPU External Frequency Setting (DSW Switches)
This option tells the clock generator what frequency to send to the CPU, SDRAM,
and the chipset. This allows the selection of the CPU’s External frequency. The
CPU External Frequency multiplied by the Frequency Multiple equals the CPU’s
Internal frequency (the advertised CPU speed).
Settings for PCB version 1.04 (DSW 1-5):
WARNING! Frequencies other than the recommended CPU bus frequencies are
not guaranteed to be stable. Overclocking your processor is not recommended. It
may result in slower speeds than expected and premature wear of the processor.
IMPORTANT:
1. To use this feature for both PCB 1.02 and 1.04, JEN must be set to Jumper
Mode: [1-2]; [See item #2 in this section, Hardware Setup].
2. Otherwise, if JumperFree mode is enabled, use BIOS setup in place of these
switches (set Operating Frequency Setting to User Define under 4.4 Ad-
vanced Menu in BIOS Setup so you can set the CPU Frequency).
A7V CPU External Frequency Selection
DSW
105MHzCPU
01
01
01
A7V133
ON
12
34
5
JumperFree Mode
ON
12
34
5
103MHz
ON
12
34
5
133MHz
ON
12
34
5
110MHz
ON
12
34
5
100MHz
ON
12
34
5
CPU
A7V CPU External
Frequency Selection
133.30 MHz
33.33 MHz
90.00 MHz
30.00 MHz
113.00 MHz
37.67 MHz
109.00 MHz
36.33 MHz
105.00 MHz
35.00 MHz
102.00 MHz
34.00 MHz
ON
1
2
34
ON
1
2
34
ON
1
2
34
ON
1
2
34
ON
1
2
34
ON
1
2
34
95.00 MHz
31.67 MHz
115.00 MHz
39.33 MHz
ON
1
2
34
110.00 MHz
36.67 MHz
ON
1
2
34
100.00 MHz
33.57 MHz
ON
1
2
34
ON
1
2
34
101.00 MHz
33.67 MHz
ON
1
2
34
117.00 MHz
39.00 MHz
ON
1
2
34
111.00 MHz
37.00 MHz
ON
1
2
34
107.00 MHz
35.67 MHz
ON
1
2
34
103.00 MHz
34.33 MHz
ON
1
2
34
0 1
0 1
0 1
A7V
CPU
PCI
CPU
PCI
CPU
PCI
CPU
PCI
Settings for PCB version 1.02 (DSW 1-4):