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- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!decwrl!sgi!rhyolite!vjs
- From: vjs@rhyolite.wpd.sgi.com (Vernon Schryver)
- Subject: Re: Memory upgrades for R4000 Indigos
- Message-ID: <np0l1qk@rhyolite.wpd.sgi.com>
- Organization: Silicon Graphics, Inc. Mountain View, CA
- References: <31535@adm.brl.mil> <noj5dkc@zola.esd.sgi.com>
- Date: Sun, 26 Jul 1992 05:57:23 GMT
- Lines: 59
-
- In article <noj5dkc@zola.esd.sgi.com>, portuesi@tweezers.esd.sgi.com (Michael Portuesi) writes:
- > ...
- > 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.
-
-
- Please be careful. I don't think this is accurate. A bunch of
- customers out there are probably fuming, thinking we think they are
- really stupid.
-
- Yes, I don't doubt it would not work to just jam an R4000 into the
- 4D/20 case, as was done with the 20MHz R3000 and 38 (35?) MHz R3000.
- I know a just a little of the heat and other problems with the 4D/35 from
- a certain VME board. The airflow in the box was fine for the 12MHz
- 4D/20, but is a long way from good enough for the R4000. So what?
-
- If you step back two paces, you'll see there is little difference
- between the Indigo box and the PI box. One is a little wider. The
- other is a little deep and much taller. Oh, the colors are different.
- So what?
-
- You could obviously move the power supply and SCSI connectors from the
- side of the Indigo to the top and rear, and end up with a box about the
- same shape as the PI. The result would probably be easier to make. It
- would not cost significantly more to make, and the yields would
- probably be better, not worse. So what?
-
- Would anyone outside SGI really care if the "E-module" inside the
- Personal IRIS were changed to look a lot like the Indigo case?
-
- (By the way, interested customers should compare the sizes of
- the Indigo CPU board and the PI CPU board. You'll be surprised.)
-
-
- The right way to think of the Indigo is as a 4D/36 or some such
- number. The Indigo is simply the latest re-packaging of the Personal
- Iris, with the new, smaller disks, new graphics, in a smaller box,
- without the not particularly wonderful, useful or popular VME slot,
- and with a lower price. This is not the first repackaging of the
- Personal IRIS. Remember when the main disk was bolted inside?
-
- Would it make sense to have two essentially identical computers,
- differing only in the size of the box? Obviously not. Did the 4D/35
- make sense? I don't know, having heard arguments both ways. The 4D/35
- does have the VME slot, and there are always "product transition
- issues."
-
-
- All of that talk about "RPC" was just marketing hype--entirely true,
- but not particularly interesting or relevant.
-
- A few thousand people inside and outside SGI will now be angry with me,
- but those are the facts, if you set asside marketing hype and internal
- SGI politics.
-
-
- Vernon Schryver, vjs@sgi.com
-