The main difference between Unified Memory Architecture (UMA) and Intel® Dynamic Video Memory Technology (DVMT) is that UMA was one of the first attempts to reduce system cost by storing graphics data structures in system memory. Due to its design constraints, its memory allocation for graphics was fixed at up to 4MB. On the other hand, Intel® Dynamic Video Memory Technology is derived from AGP. The memory allocation is not fixed. The Intel DVMT is the innovative enabling technology behind Intel® Smart Integration and Direct AGP. Similar to how applications use memory, the Intel DVMT efficiently allocates system memory by prioritizing the CPU and graphics data traffic that travel on the shared memory interface. As system memory grows, graphics memory grows.
DVMT White Paper - Intel® 82810 Graphics and Memory controller (Intel® 810 chipset family)
DVMT White Paper - Intel® 82815 Graphics Controller (Intel® 815 chipset family)
This applies to: