Categories: PCs and Hardware Glossaries Solutions: Printer Memory Versus System Memory Memory's Too Fast? L2 Cache Specifications How Computers Use Memory More Hardware Solutions

Unlike VRAM and WRAM, and despite the fact that its primary use is on video accelerator cards, SGRAM is a single-ported RAM type. It speeds performance through a dual-bank feature, in which two memory pages can be opened simultaneously; it therefore approximates dual-porting. SGRAM is proving to be a significant player in 3-D video technology because of a block-write feature that speeds up screen fills and allows fast memory clearing. Three-dimensional video requires extremely fast clearing, in the range of 30 to 40 times per second.

Published as Tutor in the 10/21/97 issue of PC Magazine.