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These GPUs reserved a variable amount of your system memory for the GPU. So if you had 4 GB of RAM the GPU would maybe use 500 MB leaving you with 3.5 GB of RAM
by lwkl 3y ago
These GPUs reserved a variable amount of your system memory for the GPU. So if you had 4 GB of RAM the GPU would maybe use 500 MB leaving you with 3.5 GB of RAM for your CPU. There was often a option in the BIOS that allowed you to change the amount of memory reserved for the GPU.
- kcb 3y agoThat option is not a hard limit on the RAM IGPUs can use.
- lwkl 3y agoThere 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.