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- Newsgroups: comp.sys.intel
- Path: sparky!uunet!pgroup!lfm
- From: lfm@pgroup.com (Larry Meadows)
- Subject: Re: Future of i860 line
- Message-ID: <BtM3Mn.2BC@pgroup.com>
- Date: Wed, 26 Aug 1992 22:25:35 GMT
- References: <1992Aug23.020507.13375@thunder.mcrcim.mcgill.edu> <BtLGIG.3q2@pgroup.com> <TMH.92Aug26230950@doppel.first.gmd.de>
- Organization: The Portland Group, Portland, OR
- Lines: 40
-
- In article <TMH.92Aug26230950@doppel.first.gmd.de> tmh@doppel.first.gmd.de (Thomas Hoberg) writes:
- >In article <BtLGIG.3q2@pgroup.com> I write:
- > Actually, the announcement was that Intel had admitted the failure of
- > the i860 as a general-purpose CPU. They still intend to support it in
- > graphics and embedded applications; speculation is that they will also
- > support it for the iPSC MPP systems. No followon has been announced,
- > but one would obviously be needed if they do indeed plan to continue to
- > use i860-like chips in the iPSC.
- >
- >Why did it fail, though? While there might be better CPUs today, I
- >thought it pretty good when it came out. Was there anything seriously
- >wrong with it (except that it'd do virtual caching)? Was it just that
- >the various vendors were too busy promoting their own designs or
- >tuning their old architectures? Is it just bad luck that nobody
- >decided to pick it up or is there something about the i860 that I
- >missed?
-
- Well, I could probably go on all day, and Intel may shoot me, but...
-
- It is my personal opinion that Intel's failure to properly market and
- position the i860 resulted in its lack of mainstream acceptance. Intel
- started out marketing the i860 as the workstation chip, then switched
- to the graphics chip, then to the supercomputing chip, even before
- vendors such as OKI had shipped any non-beta workstations.
-
- As for why Intel did this, it seems clear that they decided that the
- resources spent on the i860 were better spent on the x86 line. Whether
- or not they decide that the i860 is worth a follow on is a separate
- decision.
-
- As for the chip itself, it was fine when it came out, and a few minor
- architectural enhancements would have made it as good as any existing
- RISC chip. In fact, at equivalent clock rate with a proper memory system
- design, I'd happily put the i860-XP as-is up against Alpha, HP, or RS6000,
- and it would clearly beat the Sparc.
-
- My opinions only, of course.
- --
- Larry Meadows The Portland Group
- lfm@pgroup.com
-