Acer Aspire M3900 - Frequency;Voltage Control

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Frequency/Voltage Control
Parameter Description Option
Clock to All DIMM/PCI Enables or disables control the clock to all DIMM/PCI Enabled
Disabled
Spread Spectrum Enables or disables the reduction of the mainboard’s EMI.
Note: Remember to disable the Spread Spectrum feature if you are
overclocking. A slight jitter can introduce a temporary boost in clock
speed causing the overclocked processor to lock up.
Enabled
Disabled