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- Path: sparky!uunet!sun-barr!olivea!sgigate!odin!sgihub!zola!tweezers.esd.sgi.com!portuesi
- From: portuesi@tweezers.esd.sgi.com (Michael Portuesi)
- Newsgroups: comp.sys.sgi
- Subject: Re: Memory upgrades for R4000 Indigos
- Message-ID: <noj5dkc@zola.esd.sgi.com>
- Date: 25 Jul 92 22:16:59 GMT
- References: <31535@adm.brl.mil>
- Sender: news@zola.esd.sgi.com (Net News)
- Organization: Silicon Graphics Inc.
- Lines: 33
-
- In article <31535@adm.brl.mil>, lsr-vax!art@uunet.uu.net (Art Hays -
- PSTAFF) writes:
- |> Michael Portuesi <uunet!tweezers.esd.sgi.com!portuesi> writes:
- |> > 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.
- |>
- |> And yet, the 4D35 box is bigger than the Indigo box.
- |> Intuition suggests that something that works in a smaller
- |> box could also work in a bigger box.
-
-
- It takes more than intuition to design and manufacture
- a computer system. Size is not the only determining
- factor. Power requirements, heat generation/dissipation,
- board layout, radio frequency interference considerations,
- and other considerations affect the physical design of
- the system. The physical design of the system has a
- direct bearign on how easy it is to manufacture
- (our physical yield) and how cheap it is to manufacture
- (which affects the retail price and our profits).
-
- An R4000-based Personal IRIS, if it existed, would
- probably cost considerably more than the Indigo R4000
- due to these manufacturing constraints, and hence
- would have few, if any, buyers.
-
- --
- Michael Portuesi Silicon Graphics, Inc. portuesi@sgi.com
-