3. HARDWARE SETUP 4) CPU External Frequency Selection (DIP_SW Switches 5–8) This option tells the clock generator what frequency to send to the CPU, DRAM, and the PCI bus. This allows the selection of the CPU’s External frequency (or BUS Clock ). The BUS Clock multiplied by the Frequency Multiple equals the CPU’s Internal frequency (the advertised CPU speed).
ON ON ON CPU PCI 1 2 3 4 5 6 7 8 66MHz 33MHz 1 2 3 4 5 6 7 8 68MHz 34MHz 1 2 3 4 5 6 7 8 75.0MHz 37.5MHz ON ON ON CPU PCI 100MHz 33MHz 1 2 3 4 5 6 7 8 80MHz 40MHz 1 2 3 4 5 6 7 8 83.3MHz 41.6MHz 1 2 3 4 5 6 7 8 ON ON ON ® 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 CPU PCI 103.0MHz 34.3MHz 105MHz 35MHz 120MHz 40MHz CUV4X-M ON ON ON 1 2 3 4 5 6 7 8 CPU PCI 124MHz 31MHz 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 CUV4X-M CPU External Frequency Selection 133MHz 33MHz 140MHz 35MHz ON 1 2 3 4 5 6 7 8 CPU PCI 150.0MHz 37.5MHz NOTE: Overclocking your processor is not recommended. It may result in a slower speed. WARNING!
Frequencies other than the recommended CPU bus frequencies are not guaranteed to be stable. 20 ASUS CUV4X-M User’s Manual