VRAM plays an important role in efficiency with gaming, such as loading times and image quality. Certain VRAM levels are required to run games at various resolutions. Rendering a massive AAA game at 1920*1080 resolution is different from rendering a game at 4K UHD quality, which requires extra graphics memory (like 6GB, 8GB, 12GB). Extra Video RAM is needed to render an image of high quality properly, otherwise, the textures and images that a user attempts to render would overwhelm the Video RAM and cause the GPU to spill data into the RAM. This can cause performance issues.
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