TOPIC
This article describes expanding video random-access memory (VRAM) on the Power Macintosh Video Card for the Power Macintosh 7100 and 8100 series computers.
DISCUSSION There are two unique video cards for Power Macintosh 7100 and 8100 systems. A video card with 2 MB of memory (1 MB soldered on the card and 1 MB made up of four 256K VRAM SIMMS) is available for the Power Macintosh 7100. A video card with 4 MB of memory (2 MB soldered on the card and 2 MB made up of four 512K VRAM SIMMS) is available for the Power Macintosh 8100. VRAM SIMMS consist of four 68-pin, 80 ns SIMMs in connectors on the video card. The Power Macintosh Video Card adds a second monitor output and 2 MB of 32-bit VRAM separate from system RAM on the Power Macintosh 7100 card, and 4 MB of 32-bit VRAM on the Power Macintosh 8100 card. Monitor output is through a standard DB-15 connector. SIMMs for both VRAM expansion cards have the same pin assignments and external dimensions. However, SIMMs for the card in the Power Macintosh 7100 have two chips, each storing 128K by 8 bits; SIMMs for the card in the Power Macintosh 8100 have four chips, each storing 256K by 4 bits. VRAM expansion is not possible on the Power Macintosh 6100/60 computer because there is no VRAM Expansion Card for it. |
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| Document Information | |
| Product Area: | Computers |
| Category: | Power Macintosh |
| Sub Category: | Power Macintosh 7100; Power Macintosh 8100 |
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