Modern graphics cards use an SGRAM variant called GDDR5. As the title suggests, GDDR5 is the RAM double data rate. The DDR4 is used in today’s electronics as machine RAM.
The only key difference between VRAM and device RAM is the speed and the potential to imitate dual-port functionality. VRAM is ideal for applications that view complex textures of images or render three-dimensional structures based on polygons. Video games or 3D graphic design software are the most popular example of these applications.
The number of VRAM on a system’s video card is not nearly significant for services that run on complex data processing functions.