Advantech ARK-3399 User Manual page 34

DVMT Mode
Intel's Dynamic Video Memory Technology (DVMT) takes that concept further by
allowing the system to dynamically allocate memory resources according to the
demands of the system at any point in time. The key idea in DVMT is to improve the
efficiency of the memory allocated to either system or graphics processor.
The BIOS feature that controls all this is the DVMT Mode BIOS feature. It allows you
to select the DVMT operating mode.
Fixed
DVMT
BOTH
DVMT/FIXED Memory Size
The default setting is 64MB. The options available include 64MB, 128MB and
224MB.
Boot Display
The default setting is CRT. The options available include CRT, LFP, and LFP + CRT.
Panel Type
These fields allow you to select the LCD Panel type. The default values for these
ports are:
640 x 480, 18bits
800 x 600 18bits
1024 x 768 18bits
1280 x 1024 48bits
ARK-3399 User Manual
[DVMT]
the graphics driver will reserve a fixed portion of the system memory
as graphics memory. This ensures that the graphics processor has a
guaranteed amount of graphics memory but the downside is once allo-
cated, this memory cannot be used by the operating system even
when it is not in use.
the graphics chip will dynamically allocate system memory as graphics
memory, according to system and graphics requirements. The system
memory is allocated as graphics memory when graphics-intensive
applications are running but when the need for graphics memory
drops, the allocated graphics memory can be released to the operat-
ing system for other uses.
the graphics driver will allocate a fixed amount of memory as dedi-
cated graphics memory, as well as allow more system memory to be
dynamically allocated between the graphics processor and the operat-
ing system.
[64MB]
[CRT]
[640X480, 18bits]
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