A RAM Primer
WRAM (Windows RAM)
Like VRAM, WRAM is a dual-ported type of RAM and it is used exclusively for graphics performance. WRAM is similar to VRAM in its operation, but it offers a higher overall bandwidth (roughly 25 percent higher), in addition to several graphics features that applications developers can exploit. These include a double-buffering data system several times faster than VRAM's buffer, resulting in considerably faster screen refresh rates.
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Published as Tutor in the 10/21/97 issue of PC Magazine.