Acer AcerPower 6400 Technical Information PDF herunterladen (Seite 44)

36 Chapter 2

DVMT Mode Unified Memory Architecture (UMA) is a concept whereby

system memory is shared by both CPU and graphics

processor. While this reduces cost, it also reduces the

system's performance by taking up a large portion of

memory for the graphics processor.

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.

When set to Fixed, 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

allocated, this memory cannot be used by the operating

system even when it is not in use.

When set to DVMT, 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 operating system for other uses.

When set to Both, the graphics driver will allocate a fixed

amount of memory as dedicated graphics memory, as well

as allow more system memory to be dynamically allocated

between the graphics processor and the operating system.

It is recommended that you set this BIOS feature to DVMT

for maximum performance. Setting it to DVMT ensures that

system memory is dynamically allocated for optimal

balance between graphics and system performance.

Fixed, DVMT,

Both

Parameter Description Options

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Acer AcerPower 6400 Technical Information Seite 44