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| | CPU External Clock (bus) Frequency Selection | | CPU Speed | Ext. Clock Speed | JP12 | | Pentium- 75 | 50Mhz | | | Pentium-90/120/150 | 60Mhz | | | Pentium- 100/133/166/200 | 66.6Mhz (default) | | | |
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| | CPU : BUS Frequency Ratio (1.5x, 2.0x, 2.5x, 3.0x) | | JP13 | JP14 | P54C/CQS/CS | P55C/P55CT |  | | 2.5 | 2.5 |  | | 3 | 3 | | | 2 | 2 | | | 1.5 | Reserved (3.5x ??) | | |
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| | CPU Voltage Regulator Selection | | JP15 | JP16 | JP23* | JP3 | JP10 | Voltage |  |  | | | | 3.45V | | | | | | 3.3V (default) | | | | | | 3.45V and 2.8V | | | | | | 3.45V and 2.5V | | | | | | 3.3V and 2.8V | | | | | | 3.3V and 2.5 | JP23* : This could be jumper JP32. This may be a misprint in the manual or on the board. Has been tested and worked.
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