Foxconn G45MG User Manual

Page 40

bridge to figure out what to do. Many systems cause that high RAM to simply be ignored,
resulting in the loss of effective RAM. More complex systems will take the RAM that would
occupy that 3.5-4GB address space and re-map it into the 4.0-4.5 address space. The RAM
doesn’t care because it’s just an array of storage cells, it’s up to the memory controller to as-
sociate addresses with those storage cells.
Of course, that only works if you’re using a 64-bit (or 32bit physical address extension (PAE)
enabled) OS that can deal with physical addresses larger than 32 bits.
Once this option is enabled, the BIOS can see maximum 8192 MB of memory.

► Memory Speed Adjust

This item is used to adjust the memory speed. Select [Auto] for SPD enable mode. You also
can select a value manually such as [667 MHz] or [800 MHz].

► Memory Timing by SPD

This item is used to enable/disable provision of DRAM timing by SPD device. The Serial
Presence Detect (SPD) device is a small EEPROM chip, mounted on a memory module. It
contains important information about the module's speed, size, addressing mode and various
other parameters, so that the motherboard memory controller (chipset) can better access the
memory device.

► Initial Graphics Adapter

This item is used to choose the initial graphics controller which will be used as the primary
boot device.

► IGD Graphics Mode Select

This item is used to select the amount of system memory used by internal graphics device.

► PEG Port

This item is used to enable/disable PCI Express graphics port.