The memory is graphics memory, often referred to "VRAM" (Video RAM, though VRAM used to have another meaning but let's drop academics now). It's used for storing textures, all kindsa data the GPU works with... pretty much everything involved in 3D-rendering. It is separate from system RAM.Okay sorry folks. I just don't understand what the memory is used for..guess I'm thinking of RAM or something? I dont know anymore.