BIOS Setup
SI-642 User Manual
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4.5.1.1. Graphics Configuration
BIOS Setting
Description
Primary Display
Select which of IGFX/PEG/PCI Graphics device should
be primary display or select SG for switchable Gfx.
Options: Auto, IGFX, PEG, PCI, SG
Select PCIE
Card
Selects the card used on the platform.
Auto
skips GPIO based Power Enable to dGPU.
E1k Creek 4:
DGPU Power Enable = Active Low.
PEG Eva1:
DGPU Power Enable = Active High.
Internal
Graphics
Keep IGFX enabled based on the setup options.
Options: Auto, Disabled, Enabled
GTT Size
Sets the GTT size as 2 MB, 4 MB, or 8 MB.
Aperture Size
Sets the aperture size as 128 MB, 256 MB, 512 MB,
1024 MB or 2048 MB.
Note:
Above 4 GB MMIO BIOS assignment is
automatically enabled when selecting 2048 MB
aperture. To use this feature, disable CSM support.