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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!stanford.edu!agate!boulder!ucsu!colfelt
- From: colfelt@ucsu.Colorado.EDU (Andrew BW Colfelt)
- Subject: Re: Video Acceleration for MCA?
- Message-ID: <1992Dec16.024631.15392@ucsu.Colorado.EDU>
- Organization: University of Colorado, Boulder
- References: <1992Dec15.012139.25423@news.mentorg.com>
- Date: Wed, 16 Dec 1992 02:46:31 GMT
- Lines: 71
-
- mikes@mikes.mentorg.com (Mike Stanbro) writes:
-
- >I am looking for a video accelerator board that has a Micro-Channel bus.
- >Does anyone have knowledge of such a beast? I spent most of the afternoon
- >on the phone calling manufactures and dealers and only came up with *one*
- >manufactured by ATI.
-
- In my situation, I not only wanted acceleration,
- but VESA compliance as well. The desire for
- VESA compliance was motivated by the purchase of
- Links386, which is documented not to work on the PS/2
- VGA.
-
- ("VESA" in this post has NOTHING to do with Local Bus designs.)
-
- The ATI 8514-Ultra is definately a slick card for
- having both AT- and MCA-style edge connectors, but
- it lacks the on-board VGA circuitry. Thus, it is
- an ACCELERATOR, and not a self-contained, accelerated
- VGA system. For my purposes, the purchase of this card
- would have gotten me a super fast, non-VESA VGA system--
- not what I wanted.
-
- Orchid makes a ProDesigner IIs for MCA which is the next
- best candidate for MCA machines and for those users wishing
- VESA compliance; it is a self-contained VGA system.
-
- But the best candidate BY FAR that I have researched is
- the IBM XGA-2 card, which is backordered until January.
- IBM sells this VESA card for ~$360 with a 30-day money-back
- guarantee. IBM opened my eyes here with their new and
- aggressive pricing system. XGA-2 is reported to be 250%
- faster than XGA-1, but IBM will not (cannot?) disclose
- the performance of XGA-1 over the standard, PS/2 on-board
- VGA. It is my suspicion that XGA-1 is slower than VGA.
-
- I believe that AT style XGA-2 cards are available also.
-
-
- >It [the 8514-Ultra] is rated at 8 Winspecs vs. 25 for there ISA based
- >boards.
-
- Yes vs. No.
-
- The ATI 8514-Ultra is rated at 8 Winmarks.
-
- The ATI Graphics Ultra Pro, for the VESA Local Bus
- is rated at >29 Winmarks. The card is "ISA-based"
- only insofar as the VESA Local Bus has only been
- implemented for ISA and EISA machines. You cannot
- buy an EISA VGA that does better than 19.16 Winmarks.
-
- The Compaq Deskpro 50M is a DX2-50 with Compaq's
- QVision graphics system, the fastest non-Local Bus
- design yet.
-
- The next best EISA system (Standard Advantage DX2-50)
- scores 9.71 Winmarks, less than half the performance
- of the Compaq.
-
- In short, 8 Winmarks for the ATI 8514-Ultra is VERY
- respectable, faster than the Orchid ProDesigner IIs.
- IBM's XGA-2 is not yet rated by the Winmark suite.
- (IBM is not the only supplier of XGA-2.)
-
-
-
- --
- Andrew
- Colfelt@ucsu.Colorado.EDU
- --
-