Cpu Clock Ratio; Spread Spectrum; Dram Clock - Albatron PM266A PRO User Manual

PM266A PRO/ PM266A
PCI Latency Timer (CLK)
This item allows you to set up the PCI Latency Time (0-255). If you select the "32" it will optimize
PCI speeds. Options: 0-255、32 (default)
PCI IRQ Assignment
This item allows you to select an IRQ address for your PCI slot 1-3.
Options: Auto (default)、3、4、5、7、9、10、11、12、14、15
Frequency/Voltage Control

CPU Clock Ratio

This field will only display if the CPU has not been set to a locked state by the CPU manufactory. If
your CPU is locked, you will not be able to adjust the "CPU Clock Ratio". Options: depends on CPU.

Spread Spectrum

The Spread Spectrum function can reduce the EMI (Electromagnetic Interference) generated.
Options: Enabled (default)、Disabled
CPU Host Frequency (MHz)
This item displays the CPU Host Clock. You can set it from 100 to 233. The default depends on your
CPU frequency. Default: By CPU speed

DRAM Clock

This item displays the DDR Speed. (CPU Host frequency * DDR:CPU Ratio)
Options: By SPD (default)、DDR200、DDR266
(Note: When you install a CPU that have clock speed is 133 MHz, it will only show one option of
DDR266.)
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