There is a hard limit with DVMT that is described in the white papers by Intel. Let's say you allow up to 256 MB of RAM to be allocated for graphics. The memory

There is a hard limit with DVMT that is described in the white papers by Intel. Let's say you allow up to 256 MB of RAM to be allocated for graphics. The memory could be partitioned in a way that 128 MB are fixed memory that are always only available for the graphics driver and 128 MB are DVMT memory that can be used by the OS if the graphics driver doesn't need it.