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- From: sheldon@iastate.edu (Steve Sheldon)
- Subject: Re: Is there any merit to the 486SX?
- Message-ID: <sheldon.725583172@pv141b.vincent.iastate.edu>
- Sender: news@news.iastate.edu (USENET News System)
- Organization: Iowa State University, Ames IA
- References: <1hnr72INNank@darkstar.UCSC.EDU>
- Distribution: usa
- Date: Mon, 28 Dec 1992 22:52:52 GMT
- Lines: 53
-
- In <1hnr72INNank@darkstar.UCSC.EDU> billk@ucscb.UCSC.EDU (Bill Karwin) writes:
-
-
- >From my understanding of the 486SX, I thought it was a worthless
- >scam to sell more chips. But they seem to be so popular (relative
- >to what I would expect) that I'm wondering if I'm missing something.
-
- Scam is a matter of opinion. But it is certainly a marketing move to sell
- more chips, a move which has succeeded.
-
- >I am under the impression that the 486SX is really a 486DX with
- >the FPU disabled. And the 487SX is really a full 486DX, and when
- >it is installed into a 486SX system it bypasses or disables the
- >486SX chip. The combination of 486SX + 487SX is more expensive
- >than a 486DX. This seems like a very inefficient design to me. :-)
-
- That appears to be correct. Although recent 486SX's never had an FPU to be
- disabled. From my understanding, they've retooled the line just to make
- these new chips.
-
- >Obviously one wouldn't buy a 486SX + 487SX right off the bat, when
- >one could buy a 486DX for less money and the same functionality.
- >Or would one? Has anyone? Why?
-
- Obviously if you're buying a 486SX you don't anticipate needing a math
- coprocessor, and if you had you'd be buying a 486DX.
-
- >Does the 486SX chip somehow consume less power than a 486DX? (like
- >a 486SL does?) Is it a newer rev of the 486 design? What is it
- >about 486SX hardware that is selling?
-
- I suppose it does consume less power. But I really don't know.
-
- Why is the 486SX selling? Well it is selling for the same reason that
- there were computers sold with 8086 chips without 8087, and 80286 chips
- without 80287, and 80386 chips without 80387. The number of 386 computers
- total probably exceeds the number of 80387 chips sold by a factor of at
- least ten.
-
- For the typical user playing games, word processing, normal spreadsheet
- manipulation, etc., a math coprocessor isn't going to be worth the money.
- It's probably not even going to get any usage.
-
- That is why the 486SX is selling. That and the fact that it provides
- better performance than a 386 and costs just slightly more.
-
- I say it's a good thing. If you don't want one, then don't buy it. But
- personally I'll save $300-400 and not buy something I don't need or want.
- --
- sheldon@iastate.edu Steve Sheldon
- Project Vincent ICSS Resource Unit
- SCO ODT, Arc/Info, Atlas GIS 2142 Agronomy Hall
- Iowa State University
-