Some Aptiva or NetVista systems with the Intel 810, 810E, 815, and 815E on board video chipsets use Dynamic Video Memory technology (DVMT) to allocate the amount of video memory to be used by the system.
The following systems use this technology (this list may not be exhaustive):
- Aptiva (type 2194)
- PC 300GL (type 6268, 6278, 6288, 6338)
- NetVista (type 2251, 2271, 6018, 6058, 6059, 6266, 6269, 6270, 6276, 6279, 6280, 6286, 6344, 6345, 6568, 6569, 6578, 6579, 6599, 6644, 6646, 6647, 6648, 6649, 6650, 6831)
When the system is initially powered on, it allocates 1MB of system memory to the video adapter so that the system can utilize VGA video mode. Once the operating system is loaded, the chipset will employ more system memory as video cache if needed. If the system is running in VGA mode, then the video adapter will display only 1MB of video memory in use.
The system BIOS will only register the 1MB of video memory that is reserved for the chipset to function in VGA mode. DVMT has the ability to dynamically allocate additional memory whenever it is required, and conversely, release it when it is no longer needed.
Many diagnostic programs will only recognize the 1MB of video memory allocated by the system for VGA mode. The amount of video memory in use by the system will vary depending on the system's total amount of Random Access Memory (RAM) and the need for video memory.
According to Intel's specifications the system can allocate its total memory to video as shown below. The chart shows the maximum amount of system memory allocated to video based on the total amount of system memory and the operating system installed.
|Total system memory|
|Microsoft Windows 98/Me|
|Windows NT 4.0|