Acer Aspire G7750 Service Guide - Page 28

Parameter Description Option Adjust DRAM Configuration Press Enter to access the Adjust DRAM Configuration submenu to override the memory's Serial Presence Detect (SPD) settings by manually entering values for DRAM timings. Adjust PCI-E Frequency Sets the PCI Express clock frequency. 101 to 115 MCP PCI-Express Frequency, MHz Sets the reference clock for the media and communications processor (MCP) PCI Express 101 to 115 Auto Disabled DIMM/PCI Frequency Enables or disables the system to remove (turn off) clocks from empty DIMM and PCI slots to minimize electromagnetic interference (EMI). Enabled Disabled CPU Voltage (V) Select processor voltage control. Auto DRAM Voltage (V) Select memory voltage control to increase memory speed. 2.00 Min: 1.80v Max: 2.80 V NB Voltage (V) Select Northbridge (NB) chipset voltage control. Auto Min: 1.200v Max: 1.600 V SB Voltage (V) Select Southbridge (SB) chipset voltage control. Auto Min: 1.500v Max: 2.000 V NB Memory Reference Voltage Set the NB memory reference voltage. Auto DIMM Memory Reference Set the memory reference voltage. Voltage Auto Memory Terminator Voltage Set the memory terminator voltage. Auto CPU GTL Reference Voltage Set the processor Gunning Transreceiver Logic (GTL) reference voltage to Auto provide headroom for overclocking quad-core processors. NB GTL Reference Voltage Set the NB GTL reference voltage to provide the best level of stability on the system. Auto FSB Terminator Voltage Set the FSB terminator voltage. Auto 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 20 Chapter 2