What is video memory for?

Video memory is the internal random access memory for storing data, it is used to build an image on the monitor screen. Video memory does not affect performance, memory only affects the amount and quality of textures that can be loaded there. Let’s take a video game as an example. Let’s say we have 1 GB of video memory, we set the resolution to 800 * 600p, set the low settings, the game runs smoothly for us, but the picture is not clear due to the low resolution, but all because we do not have enough video memory to load more textures. If we have more video memory, say 3 GB, then we can set the resolution to 1920 * 1080p, select high settings and the game will also play with us, but it will be more interesting due to its graphics.