3.HARDWARE SETUP

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).

 

SYSCLK

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

2

3

4

ON

2

3

4

ON

2

3

4

ON

2

3

4

 

1

1

1

1

A7V266-C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU

100MHz

133.33MHz 140MHz

 

 

 

 

AGP 60.67MHz

66.67MHz

70MHz

(JumperFree Mode)

PCI

33.33MHz

33.33MHz

35MHz

 

 

 

 

A7V266-C CPU External

Frequency Selection

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.

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.

 

OVER2

 

 

OVER1

 

1

2

2

3

OVER Voltage

OVER Voltage

ENABLE

DISABLE

A7V266-C

 

(Default)

 

 

A7V266-C OVER Voltage Selection

Motherboard Settings

3. H/W SETUP

ASUS A7V266-C User’s Manual

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