Video Memory is a type of computer memory specifically designed to store image data that a computer's graphics card needs to display visuals on a screen. It helps in rendering graphics smoothly and quickly, allowing for better performance in video games and graphic-intensive applications. The more video memory a graphics card has, the more detailed and complex images it can handle. There are different types of video memory, such as GDDR5 and GDDR6, which are optimized for speed and efficiency. Video memory works alongside the computer's main memory, but it is dedicated solely to graphics tasks, ensuring that visual data is processed without slowing down other operations.