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Chapter 2: Hardware information
2) CPU External Frequency Selection (SYSCLK DSW Switches 1–4)
This option tells the clock generator which frequency to send to the CPU,
DRAM, and the PCI bus. These switches permit 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).
®
A7V266-M
A7V266-M CPU External
Frequency Selection
SYSCLK
(JumperFree Mode)
140MHz
70MHz
35MHz
ON
1234
ON
1234
CPU
AGP
PCI
CPU
AGP
PCI
100MHz
66.67MHz
33.33MHz
133.33MHz
66.67MHz
33.33MHz
ON
1234
ON
1234
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.
IMPORTANT! To use this feature, the JEN jumper must be set to
JumperMode, [1-2].
CPU AGP PCI DSW1 DSW2 DSW3 DSW4
100 66.67 33.33 [ON] [OFF] [OFF] [ON]
133 66.67 33.33 [OFF] [OFF] [OFF] [OFF]
140 70 35 [ON] [ON] [ON] [OFF]
JumperFree
™
Mode [OFF] [OFF] [OFF] [OFF]