sentences:  Graphics RAMs are asynchronous and synchronous DRAMs designed for graphics-related tasks such as texture memory and framebuffers, found on video cards.VRAM is a dual-ported variant of DRAM that was once commonly used to store the frame-buffer in some graphics adaptors.WRAM is a variant of VRAM that was once used in graphics adaptors such as the Matrox Millennium and ATI 3D Rage Pro.