Product Documentation
Abstract
Microprocessor Board connectors and jumpers for the PC Server 325
Content
Microprocessor Board Connectors and Jumpers
Jumper Settings - Pentium II
| NOTE: Refer to "Bus/CPU Speed MHz Settings - Pentium II" for the correct clock speed and frequency selection jumper settings for the microprocessor. |
| Jumper | Description |
|---|---|
| J20, J38 | Clock speed jumper block. The default setting is 66.66 MHz. Use the appropriate microprocessor clock speed for the microprocessor that you have installed. |
| J27, J28, J29, J30 | Processor core frequency selection jumper block. The default core/bus fraction is 3.5 (233 MHz). (NOTE: MHz measures only processor internal clock speed, not application performance. Many factors affect application performance.) (Jumpers are installed on J27 and J30; no jumper is installed on J28 or J29.) For the core/bus fraction 4 (266 MHz), the jumpers are installed on J27, J28, and J29; no jumper is installed on J30. For the core.bus fraction 4.5 (300 MHz), the jumpers are installed on J27 and J29; no jumper is installed on J28 or J30. For the core.bus fraction 5 (333 MHz), the jumpers are installed on J27 and J28; no jumper is installed on J29 or J30. |
| J17, J18 | Microprocessor memory controller (PMC) frequency selection jumper block. The default setting is 66.66 MHz. |
| J9, J10, J12 | Reserved. |
| J8 | Reserved. |
Bus/CPU Speed MHz Settings - Pentium II
Document Location
Worldwide
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Document Information
Modified date:
23 January 2019
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ibm1MCGN-3R4R7K