TOPIC
This article provides specific technical information relating to the video RAM and upgrade capabilities of iMac.
DISCUSSION The iMac computer includes 2 MB of SGRAM for video on the main logic board. The video RAM can be expanded up to 6 MB by installing an additional 4 MB of SGRAM on a 144-pin SO-DIMM (small outline dual inline memory module). The chips on the DIMM must be 3.3 V SGRAM chips. The speed of the SGRAM chip must be 100 MHz or greater, corresponding to a cycle time of 10 ns or less. Increasing the size of the installed video RAM from 2 MB to 4 or 6 MB increases the maximum color depth available at the highest monitor resolutions. Any additional video RAM that isn't used for the current display mode is available to QuickDraw 3D applications for more data storage, such as textures, which results in faster 3D graphics performance. |
||||||
| Document Information | |
| Product Area: | iMac |
| Category: | iMac Hardware |
| Sub Category: | Features; General Topics |
Copyright © 2000 Apple Computer, Inc. All rights reserved.