Power Macintosh 8100: Incorrect VRAM Causes ‘Ghosted‘ Images

After upgrading the VRAM in a Power Macintosh 8100/80 using Sony 20" multisync monitors, the display is normal at thousands of colors, but in millions of colors there are "ghosted" images of each horizontal pixel.
It appears that you have installed the M5953LL/A VRAM upgrade kit which is incorrect for this video card. This kit contains two 256K SIMMs and should be used in the Power Macintosh 7100/66 and other computers which accept 256K VRAM SIMMs.

The correct VRAM upgrade kit is M1311LL/A, which contains one 512K VRAM SIMM. The Power Macintosh 8100 video card requires four 512K VRAM SIMMs to upgrade from 2MB to 4MB VRAM.

Published Date: Feb 19, 2012