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Dynamic Video Memory Technology (DVMT)
- DVMT delivers optimum allocation of memory for balanced graphics and system performance.
When additional graphics memory is required, DVMT will allocate system memory for video functions.
DVMT returns the memory to the operating system when it is no longer required.
- When all graphics memory is being allocated from system memory, the total DVMT graphics memory
is capped to an upper-limit ensuring the best usability and performance of the OS.
Table 1 - Graphics Memory Allocations
| System Memory |
Maximum Memory
Allocated for Graphics |
| 0-63MB |
Unsupported |
| 64 MB |
8MB |
| 65-128MB |
32 MB |
| 129MB+ |
64 MB |
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What DVMT is Not
- DVMT allocates memory based on system needs and is not user-configurable. Allocating additional system memory will not necessarily provide increased graphics performance.
- DVMT is not local video memory.
- DVMT will not function in MS-DOS*. MS-DOS uses a static amount of legacy VGA memory as described below.
Legacy VGA/SVGA Memory
- The Intel 830M/830MG chipset supports the selection of three different sizes of pre-allocated memory for legacy VGA compatibility: 512KB, 1MB or 8MB. This amount is typically selected in the system BIOS as a setup option. The option to change this amount may not be implemented by all system manufacturers.
Further information on DVMT is available through the following resources:
Figure 1: With 128MB of system memory installed, 32MB of video memory is displayed in Windows* 2000 Display Properties, Settings, Advanced, Adapter tab.
Figure 2: With 512MB of system memory installed, 64MB of video memory is displayed in Windows* 2000 Display Properties, Settings, Advanced, Adapter tab.
Figure 3: Maximum video memory as displayed in Windows* 2000. To find this, right click on the Desktop, select Graphics Options, then Graphics Properties, then select the Information tab.
This applies to:
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