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AIMB-253 Mainboard
Precharge Delay (tRAS)
The field specifies the idle cycles before precharging an idle bank.
System Memory Frequency
Use this item to configure the clock frequency of the installed DRAMs.
**VGA Setting**
The following items allow you to configure the VGA settings of the system.
PEG/Onchip VGA Control
This setting allows you to select whether to use the onchip graphics processor or
the PCI Express card.
When set to [Onchip VGA], the motherboard boots up using the onboard graph-
ics processor, even when a PCI Express graphics card is installed.
When set to [PEG Port], the motherboard boots up using the PCI Express graph-
ics card, if one is installed. Otherwise, it defaults to the onboard graphics proces-
sor.
When set to [Auto], the BIOS checks to see if a PCI Express graphics card is in-
stalled. If it detects that a PCI Express graphics card is present, the motherboard
boots up using that card. Otherwise, it defaults to the onboard graphics proces-
sor.
Warning:
(a) Set to [PEG Port] only when graphics card is installed. If set to [PEG Port]
without any graphic card installed, system fails to boot up. Please clean
CMOS to restore default setting.
(b) If PCI Express graphic card is installed, please set to [PEG Port]. [Auto] and
[Onchip VGA] will make system fail to enter OS.
On-Chip Frame Buffer Size
The field specifies the size of system memory allocated for video memory.
Boot Display
Use the field to select the type of device you want to use as the display(s) of the
system.
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