Acer Aspire 3750Z Service Guide - Page 29

Frequency/Voltage Control Field Enable Clock to All DIMM/PCI Spread Spectrum Description When enabled, clock signals will be sent to the PCI and memory slots regardless of whether the slot is occupied or not. When the mainboard's clock generator pulses, the extreme values of the pulses creates EMI (electromagnetic interference). Set this field to Enabled to reduce this EMI level. This reduces interference problems with other electronics in the area. 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. Value Enabled Disabled Enabled Disabled Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 21