72 PCM-6898 User ManualFrequency/Voltage ControlAuto Detect DIMM/PCI CLKThis item allows you to enable/disable auto detect DIMM/PCIclock.The choices: Enable/DisableSpread SpectrumThis allows you to enable/disable the spread spectrum modulate.When the system clock generator pulses, the extreme values of thepulse generate excess EMI. Enabling pulse spectrum spreadmodulation changes the extreme pulse spikes to flat curves thusreducing EMI.The choices: Enable, DisableCPU Host Clock (CPU/PCI)Select Default or select a timing combination for the CPU and thePCI bus. When set to default, the bios uses the actual CPU andPCI bus clock values.
