Macintosh AVs: AV Card Video vs. Onboard Video Speed (5/94)

I read a magazine article that claimed that the Power Macintosh onboard video is faster than the AV card video. Is this correct?

Yes, the display speed of the internal video is faster than the╩AV card. This is because the AV card uses a 32-bit wide data path for video (as does the 840AV), while the DRAM-based video and HPV cards use a 64-bit wide video path. This means that video is technically faster on the non-AV Macintosh computers, although this is only a benchmark. In real applications, you should not notice the video speed differences between an AV and a non-AV system. So, the raw video speed is a trade-off of delivering video-in and video-out features, but you won't be able to tell the difference in actual system performance.


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Published Date: Feb 19, 2012