Biostar B660GTN User Manual page 23

Primary Display
This item selects which of IGFX/ PEG/ PCI Graphics device should be Primary Display or select SG
for Switchable Gfx.
Options: Auto (Default) / IGFX / PEG / PCI
GTT Size
This item select the GTT Size.
Options: 8MB (Default) / 2MB / 4MB
Aperture Size
This item selects Aperature Size.
Options: 256MB (Default) / 128MB / 512MB / 1024MB
» Note : Above 4GB MMIO BIOS assignment is automatically enabled when selecting 2048MB aperture.
To use this feature, please disable CSM Support.
DVMT Pre-Allocated
This item selects DVMT 5.0 Pre-Allocated (Fixed) Graphics Memory size used by the Internal
Graphics Device.
Options: 32M (Default) /64M / 96M / 128M / 160M / 4M / 8M / 12M / 16M / 20M/ 24M / 28M /
32M/F7 / 36M / 40M / 44M / 48M / 52M / 56M / 60M
DVMT Total Gfx Mem
This item selects DVMT5.0 Total Graphic Memory size used by the Internal Graphics Device.
Options: 256MB (Default) / 128MB / MAX
PAVP Enable
This item enables or disables PAVP.
Options: Enabled (Default) / Disabled
Max TOLUD
Maximum Value of TOLUD. Dynamic assignment would adjust TOLUD automatically based on
largest MMIO length of installed graphic controller.
Options: Dynamic (Default) / 1 GB / 1.25 GB / 1.5 GB / 1.75 GB / 2 GB / 2.25 GB / 2.5 GB / 2.75 GB
/ 3 GB / 3.25 GB / 3.5GB
VT-d
This item enables or disables VT-d capability.
Options: Enabled (Default) / Disabled
Above 4GB MMIO BIOS assignment
This item enables or disables above 4GB Memory Mapped IO BIOS assignment. This is enabled
automatically when Aperture Size is set to 2048MB.
Options: Disabled (Default) / Enabled
B660GTN
3. Chipset Menu | 23