Short for
video RAM, and pronounced
vee-ram. VRAM is special-purpose
memory used by
video adapters. Unlike conventional
RAM, VRAM can be accessed by two different
devices simultaneously. This enables the
RAMDAC to
access the VRAM for
screen updates at the same time that the video processor provides new
data. VRAM yields better graphics performance but is more expensive than normal RAM.
A special type of VRAM, called Windows RAM (WRAM), yields even better performance than conventional VRAM.