Acer Aspire M1610 Aspire M1610-Veriton M261 Service Guide - Page 46

Frequency/Voltage Control The following screen shows the Frequency and Voltage Control parameters and their default settings: Phoenix - AwardBIOS CMOS Setup Utility Frequency/Voltage Control Auto Detect DIMM/PCI Clk Spread Spectrum [Enabled] [Disabled] Item Help Menu Level X KLIJ :Move Enter: Select +/-/PU/PD :Value F10: Save and Exit ESC:Exit F1: General Help F5: Previous Values F7: Optimized Defaults The following table describes the parameters found in this menu. Settings in boldface are the default and suggested settings. Parameter Auto Detect DIMM/PCI Clk Spread Spectrum Description Options This option allows you to enable/disable the feature of auto detecting the clock frequency of the installed PCI bus. Enabled Disabled When the motherboard's clock generator pulses, the extreme values (spikes) of the pulses creates EMI (Electromagnetic Interference). The spread Spectrum function reduces the EMI generated by modulating the pulses so that the spikes of the pulses are reduced to flatter curves. If you do not have any EMI problem, leave the setting at Disabled for optimal system stability and performance. But if you are plagued by EMI, setting to Enabled for EMI reduction. Remember to disable Spread Spectrum if you are overlocking because even a slight jitter can introduce a temporary boost in clockspeed which may just cause your overlock ed processor to lock up. Enabled 38 Chapter 2