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Symptom(s):
- Processor boots at 2.80 GHz
- Processor running slow
- Slower speed than expected
Solution:
Many board manufacturers have designed their initial Intel® 865 and 875 chipset-based motherboards to previous platform guidelines. These motherboards may not meet the currently required processor electrical, mechanical, and thermal specifications. Some processors 3.20 GHz and above based on 90nm technology may only boot to 2.80 GHz. When this invalid configuration is detected, the processor will run at this slower frequency to reduce the chance of damage to the processor and/or motherboard.
Today, however, most vendors are now shipping boards that comply with the new revised guidelines that do address the electrical, mechanical, and thermal specifications of these processors. The revised guidelines can be located at http://developer.intel.com/design/Pentium4/documentation.htm
There is no simple method to visually determine whether a motherboard meets the new platform requirements other than to reference or verify the motherboard AA# with the board manufacture.Check carefully with the board vendor to ensure board compatibility with the Intel® Pentium® 4 processors at 3.20 GHz and above or with the 'E' letter designator.
Intel 845 chipset-based boards are not compliant with the new CPU requirements and may not have the necessary updates to recognize the new processor speeds, resulting in only booting to 2.80 GHz. Some systems may display a message that outlines this invalid configuration.
For information on Third Party boards- check with the board manufacturer.
Operating System:
This applies to:
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