Asus A7V8X-MX SE A7V8X-MX SE User's Manual - Page 22

1.11 Switch and jumpers The motherboard frequency is adjusted through the DIP switches. The white block represents the switch position. The illustration below shows the ON and OFF positions of the switches. ® A7V8X-MX SE A7V8X-MX SE DIP Switches DSW ON ON OFF 12345 1.Frequency Selection 2.Frequency Selection 3.Frequency Selection 4.Frequency Selection 5.Frequency Selection The option to set the CPU core bus frequency multiple is available only on unlocked CPUs. If you are using a locked CPU, setting the switches does not produce any effect. 1. CPU external frequency selection (SW1 Switches 1-5) This option tells the clock generator what frequency to send the CPU. 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). The default CPU external frequency is 100MHz. If your CPU supports 133/166MHz external frequency, adjust the DSW settings before installing the motherboard to the chassis. DSW ® A7V8X-MX SE ON ON ON CPU AGP PCI 12345 12345 12345 100MHz 66.67MHz 33.33MHz (Default) 166.67MHz 66.67MHz 33.33MHz 133.33MHz 66.67MHz 33.33MHz A7V8X-MX SE CPU External Frequency Selection Set the CPU frequency only to the recommended settings. Frequencies other than the recommended CPU bus frequencies are not guaranteed to be stable. 1-14 Chapter 1: Product introduction