VRAM（Video RAM，视频随机接达记忆器），是显存的一种形式，作为影像绘图卡、显卡所使用的DRAM（内存），可让RAMDAC与影像处理同时访问。一般可包括两个部分，第一是数字电子的部分，用以接受微处理机的命令，将所收到的数据格式化。另一个是视频产生器的部分，用以将上述数据进一步形成视频信号。

Video RAM, or VRAM, is a dual-ported variant of dynamic RAM (DRAM), which was once commonly used to store the framebuffer in some graphics adapters.

It was invented by F. Dill, D. Ling and R. Matick at IBM Research in 1980, with a patent issued in 1985 (US Patent 4,541,075). The first commercial use of VRAM was in a high-resolution graphics adapter introduced in 1986 by IBM for the PC/RT system, which set a new standard for graphics displays. Prior to the development of VRAM, dual-ported memory was quite expensive, limiting higher resolution bitmapped graphics to high-end workstations. VRAM improved the overall framebuffer throughput, allowing low cost, high-resolution, high-speed, color graphics. Modern GUI-based operating systems benefitted from this and thus it provided a key ingredient for proliferation of graphic user interfaces throughout the world at that time.