| PX875P PRO/ PX875P | |
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Factory Default | Available Options |
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CPU Host Frequency |
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100 | 2.66X、2.50X (Debug) |
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133 | Default (default)、2.00X、2.50X、 |
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1.33X (Debug)、1.60X (Debug) |
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200 | Default (default)、1.33X、1.60X、 |
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2.00X、2.50X (Turbo) |
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DDR Speed
This item displays the current DDR memory speed.
Spread Spectrum
The Spread Spectrum function can reduce the EMI (Electromagnetic Interference) generated. Options: Enabled (default)、Disabled
AGP/PCI/SRC Speed Setting
This item determines the AGP, PCI and SRC frequencies (speed settings). You can set these frequencies using the supplied BIOS options. One of the options available to you is “Auto, Auto, Auto”. Using the “Auto, Auto, Auto” option will instruct the system to automatically calculate these frequencies based on the factory default “CPU Host Frequency” setting, the current “CPU Host Frequency” setting and the formulas in the table below. Note that the factory default “CPU Host Frequency” is the value of the “CPU Host Frequency” when you first received your system.
Factory Default |
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“CPU Host |
| Formulas |
Frequency” |
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100 | AGP frequency | = current CPU Host Frequency / 1.5 |
PCI frequency | = current CPU Host Frequency / 3 | |
| SRC frequency | = current CPU Host Frequency / 1 |
133 | AGP frequency | = current CPU Host Frequency / 2 |
PCI frequency | = current CPU Host Frequency / 4 | |
| SRC frequency | = current CPU Host Frequency / 1.33 |
200 | AGP frequency | = current CPU Host Frequency / 3 |
PCI frequency | = current CPU Host Frequency / 6 | |
| SRC frequency | = current CPU Host Frequency / 2 |
To determine your new frequencies, you must first take the factory default “CPU Host Frequency” and then determine the corresponding formulas according to the table above. Second, take the current “CPU Host Frequency” setting and apply it to the formulas to arrive at your new frequencies.
For example, if your factory default “CPU Host Frequency” was 100, and you reset the “CPU Host Frequency” to 133, your AGP, PCI and SRC frequencies will be as follows:
32
