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- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!cs.utexas.edu!usc!sdd.hp.com!mips!odin!fido!zola!tweezers.esd.sgi.com!portuesi
- From: portuesi@tweezers.esd.sgi.com (Michael Portuesi)
- Subject: Re: Memory upgrades for R4000 Indigos
- Message-ID: <nkbk12k@zola.esd.sgi.com>
- Sender: news@zola.esd.sgi.com (Net News)
- Organization: Silicon Graphics Inc.
- References: <1992Jul17.204254.6599@microunity.com> <1992Jul21.004035.27345@donau.et.tudelft.nl> <1992Jul21.064111.1619@microunity.com> <1992Jul22.160210.9849@eagle.lerc.nasa.gov>
- Date: Wed, 22 Jul 92 17:10:26 GMT
- Lines: 43
-
- In article <1992Jul22.160210.9849@eagle.lerc.nasa.gov>,
- steve@pitacat.lerc.nasa.gov (Steven H. Izen) writes:
- |> In article <1992Jul21.064111.1619@microunity.com>,
- |> jsw@microunity.com (Jeff Weinstein) writes:
- |>
- |> > Actually neither is true. The main problem with the r3k
- |> > indigo was that there just wasn't room on the CPU board
- |> > to put the chips that did the memory interleaving/control,
- |> > so they had to go on the back of the simms. It was
- |> > definitely not a conspiracy on the part of SGI marketing
- |> > to squeeze more money out of customers. The engineers
- |> > sincerely felt bad to have to make that sort of engineering
- |> > trade-off, and vowed never to do it again. They have lived
- |> > up to it in the new r4k indigo.
- |>
- |> This all makes sense for the inidgo, but does the same argument
- |> apply to the 4D/35 as well?
-
-
- It does, but since there are no plans to produce an R4000
- upgrade for the Personal Iris line, the point is moot.
-
- Before the inevitable flames about "abandoning" the
- Personal Iris line arrive, let me point out that
- producing the 4D/35 was very difficult from both an
- engineering and manufacturing standpoint. The R3000A
- in the 4D/35 worked only with some unconventional hacks
- to meet cooling requirements, and the electronics module
- had to be redesigned to fit in the chassis. An R4000
- upgrade would be frought with even more engineeering
- problems. It would be difficult and costly for us to
- manufacture.
-
- I'm sure Dave Olson could provide more details about the
- difficulties involved, but I just wanted to point out
- that we aren't trying to screw our Personal Iris
- customers, or try to "milk more money" out of them by
- "forcing" them to upgrade to the Indigo. The PI design
- has simply reached the end of its life, from an
- engineering and manufacturing standpoint.
-
- --
- Michael Portuesi Silicon Graphics, Inc. portuesi@sgi.com
-