Frequently Asked Questions Q: What is Dynamic Video Memory Technology?A: Dynamic Video Memory Technology (DVMT) is an enhancement of the UMA concept. The optimum amount of memory is allocated for balanced graphics and system performance, through Direct AGP known as Non-Local Video Memory (NLVM), and a highly efficient memory utilization scheme. DVMT ensures the most efficient use of available memory - regardless of frame buffer or main memory sizing - for maximum 2D/3D Graphics performance. DVMT dynamically responds to system requirements, and applications demands, by allocating the proper amount of display, texturing, and buffer memory after the operating system has started.
For example, a 3D application when launched may require more vertex buffer memory to enhance the complexity of objects, or more texture memory to enhance the richness of the 3D environment. The operating system views the integrated graphics driver as an application, which uses Direct AGP to request allocation of additional memory for 3D applications, and returns the memory to the operating system when no longer required.
Note: Information in this document was taken from the Intel® 845G/GL Chipset Dynamic Video Memory Technology white paper. The PDF file contains additional background information.