Vram, short for video random access memory, is a type of memory used in graphics cards to store textures, framebuffers, and other data that is frequently accessed by the GPU. By default, the amount of VRAM allocated to a graphics card is set to a fixed value. However, it is possible to set the VRAM to auto, which allows the graphics card to dynamically adjust the amount of VRAM it uses based on the workload.
There are several benefits to setting the VRAM to auto. First, it can help to improve performance in games and other applications that require a lot of VRAM. By allowing the graphics card to automatically allocate more VRAM when needed, you can avoid situations where the graphics card runs out of memory and has to start using slower system memory. Second, setting the VRAM to auto can help to reduce power consumption. When the graphics card is not using all of its VRAM, it can power down some of the memory modules, which can save power.