Microsoft MOTHERBOARD USER'S GUIDE PXP43 - Manual (Page 40)

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Using BIOS
PXP43 Motherboard User’s Guide
Auto Detect DIMM/PCI Clk (Enabled)
When this item is enabled, BIOS will disable the clock signal of free DIMM/PCI slots.
Spread Spectrum (Enabled)
If you enable spread spectrum, it can significantly reduce the EMI (Electro-Magnetic
Interference) generated by the system.
CPU VOLTAGE (Normal)
This item allows users to adjust the CPU voltage.
Press <Esc> to return to the main menu setting page.
Memory Voltage (1.90V)
This item allows users to adjust the DDR memory voltage.
Over-clocking Function. (Disabled)
This item decides the CPU over-clocking function/frequency installed in your sys-
tem. If the over-clocking fails, please turn off the system power. And then, hold the
PageUp key ( similar to the Clear CMOS function) and turn on the power, the BIOS
will recover the safe default.