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VRAM (Video RAM) is a term used in computers to describe RAM dedicated for displaying bitmap graphics in graphics hardware. VRAM resides on the motherboard physically and is separate from the main RAM. In few systems the VRAM is shared with the system RAM.
The term VRAM is used more specifically in high performance graphics hardware. The VRAM is used to constantly refresh the display and at the same time be responsive to modifications from the host system. Dual Ported VRAM allows the graphics processor to read from memory and redraw the screen simultaneously, eliminating the problem plaguing single-ported memory types (i.e., DRAM).
