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Hardware setup – Asus A7V266-C User Manual

Page 19

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ASUS A7V266-C User’s Manual

19

3. HARDWARE SETUP

3. H/W SETUP

Motherboard Settings

2) CPU External Frequency Selection (SYSCLK Switches 1–4)

This option tells the clock generator what frequency to send to the CPU, DRAM,
and the PCI bus. This allows the selection of the CPU’s External frequency (or
BUS Clock). The BUS Clock multiplied by the Frequency Multiple equals the
CPU’s Internal frequency (the advertised CPU speed).

R

A7V266-C

A7V266-C CPU External
Frequency Selection

SYSCLK

CPU
AGP
PCI

100MHz

60.67MHz
33.33MHz

(JumperFree Mode)

140MHz

70MHz
35MHz

133.33MHz

66.67MHz
33.33MHz

ON

1 2 3 4

ON

1 2 3 4

ON

1 2 3 4

ON

1 2 3 4

WARNING!

Set the CPU frequency only to the recommended settings. Frequencies

other than the recommended CPU bus frequencies are not guaranteed to be stable.
Overclocking the processor is not recommended. It may result in a slower speed.

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A7V266-C

A7V266-C OVER Voltage Selection

OVER2

OVER1

1 2

OVER Voltage

ENABLE

2 3

(Default)

OVER Voltage

DISABLE

3) Voltage Over Setting (OVER1, OVER2)

This jumper opens or closes the circuit to control the use of voltage increases to
enhance CPU performance. The default setting, [2-3] disables the use of “over-
voltage” increases. Switch the jumper cap to [1-2] before attempting changes
with the VID jumpers. NOTE: It is not recommended to use this feature unless
confident that the CPU will not be damaged.