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- Path: sparky!uunet!uunet.ca!canrem!dosgate![roger.ramsey@canrem.com]
- From: "roger ramsey" <roger.ramsey@canrem.com>
- Newsgroups: comp.os.os2.misc
- Subject: ati graphics ultra
- Message-ID: <1992Jul24.1480.22900@dosgate>
- Date: 24 Jul 92 14:32:07 EST
- Reply-To: "roger ramsey" <roger.ramsey@canrem.com>
- Distribution: comp
- Organization: Canada Remote Systems
- Lines: 29
-
- Man Kit Tang wrote on 07-22-92 regarding ATI GRAPHICS ULTRA:
-
- MK>Well, for an AT bus based coprocessed grahics card. Most of the
- MK>advantage gain does come from reducing bandwidth requirement of the AT
- MK>bus. The Mach 8 does some graphics primitive pretty well, but for that
- MK>matter, a 486 is not bad either.
-
- I think you'll find that 1024x768x256 on a 386/33 with a Graphics Ultra
- will be faster than a 486/33 with a plain dumb frame buffer SVGA card.
-
- MK>So, one more time, the problem of HIGH resolution graphics
- MK>performance of most PC compatibles with AT based controller is the
- MK>limited bandwidth of the AT bus.
-
- From the point of view that, using your above example, the 486 would have
- to calculate every pixel and then send it across the bus rather than a
- series of instructions to the card, then yes the bus becomes a limiting
- factor.
-
- Roj
-
-
-
-
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