Acer Aspire L350 Service Manual page 43

Parameter
On-Chip Frame Buffer Size
Chapter 2
Description
This BIOS feature controls the amount of system memory
that is allocated to the integrated graphics processor when
the system boots up. However, its effect depends on
whether your motherboard supports the older Unified
Memory Architecture (UMA) or the new Dynamic Video
Memory Technology (DVMT).
If you have a motherboard that supports UMA, the memory
size you select determines the maximum amount of system
memory that is allocated to the graphics processor. Once
allocated, it can only be used as graphics memory. It is no
longer accessible to the operating system or applications.
Therefore, it is recommended that you select the absolute
minimum amount of system memory that the graphics
processor requires for your monitor. You can calculate it by
multiplying the resolution and colour depth that you are
using. Of course, if you intend to play 3D games, you will
need to allocate more memory.
If you have a motherboard that supports DVMT, the
memory size you select determines the maximum amount
of system memory that is pre-allocated to the graphics
processor. Once allocated, it can only be used as graphics
memory. It is no longer accessible to the operating system
or applications.
However, unlike in a UMA system, this memory is only
allocated for use during the boot process or with MS-DOS
or legacy operating systems. Additional system memory is
allocated only after the graphics driver is loaded. It is
recommended that you set it to 8MB as this allows for high-
resolution splash screens as well as higher resolutions in
MS-DOS applications and games.
Options
1MB, 4MB, 8MB,
16MB, 32MB,
64MB, 128MB (for
UMA)
1MB, 8MB (for
DVMT)
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