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- Path: sparky!uunet!dtix!darwin.sura.net!wupost!zaphod.mps.ohio-state.edu!rpi!sarah!albnyvms.bitnet!TW5232
- From: tw5232@albnyvms.bitnet (Teddy Wang)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: '040 and SCSI
- Message-ID: <1992Jul22.015517.26439@sarah.albany.edu>
- Date: 22 Jul 92 01:55:17 GMT
- References: <1992Jul7.224444.943@westford.ccur.com> <53585@mentor.cc.purdue.edu>,<mike.0310@agrijag.UUCP>
- Sender: news@sarah.albany.edu (News Administrator)
- Reply-To: tw5232@albnyvms.bitnet
- Organization: University of NY at Albany
- Lines: 79
-
- In article <mike.0310@agrijag.UUCP>, mike@agrijag.UUCP (Mike Schiller) writes:
- >In article <53585@mentor.cc.purdue.edu> ab@nova.cc.purdue.edu (Allen B) writes:
- >> In article <kaltenha.710501074@fidji> kaltenha@informatik.uni-freiburg.de
- >> (Raoul Kaltenhaeuser) writes:
- >> >I plan to buy a A2000 + 68040 + SCSI-Drive (a A3000+040 would be
- >> >too expensive). I heard that there are 040 boards with SCSI host
- >> >controller onboard. Is that true? Which companies produce them?
- >> >Is this combination faster than SCSI host and 68040 on seperated
- >> >boards? Are there drawbacks to the combo-solution?
- >>
- >With the recient price reduction of the A3000 & 2000, and with the price of
- >the original PP&S 040 card for the 3000 having dropped in price, I would
- >say that you'd probably be better off getting the A3000/PP&S040 combo rather
- >than an A2000 with an 040. First off, the 040's on the 2000 may well run at
- >28mhz, but the rest of the system (the system bus) still only runs at 7.16
- >mhz, whereas with the 3000 not only is the 040 running at 25mhz, but the
- >rest of the system is as well! One advantage to the PP&S 040 is that it's
- >the only one that I know of that runs Syncronously with the A3000, and what
- >that means is that most of the others that run Async, you have a similiar
- >situation to the 2000 boards, that is the board runs at 28mhz, but the rest
- >of the system still only runs at 25mhz (or 16mhz if you get a 16mhz 3000).
- >The benefit of this isn't clear right away, but it is this - If you find a
- >dealer that has one of the 16mhz A3000's in stock, chances are you can pick
- >it up REAL cheaply, as usually nobody wants them, they want the 25mhz ones.
- >Now when you put the PP&S 040 in it makes the whole system run at 25mhz
- >(other than the 16mhz 68030/68882's there's no difference between the 2
- >models of 3000), so now that you're not using the stock processor anymore
- >you will have all the benefits of a 25mhz 040 3000 in a much cheaper package!
- >The only disadvantage to the 16mhz machines is that you can no longer jump
- >back to the 68030 like you can with a 25mhz machine, as you have to change
- >some jumpers on the MB of the 3000 that determine the speed of it, the
- >choices you get are: 16mhz, 25mhz, or external speed which is what the PP&S
- >board uses, as it regulates the speed of the machine, and it's telling the
- >machine to go at 25mhz, and the 16mhz parts can't handle that speed!
-
-
- Now this is a silly post! First off, you can get a used 2000 for around $500.
- At least a month ago you could get the RCS Fusion Forty for $995. That's $1500
- for an '040 machine! Add some 32bit ram and you'll be going 4 times faster
- than a standard 3000. We're talking $2000 for a fully configured 17 MIPS
- computer! Well lets, see I've seen standard A3000/16 for around $2000 (used of
- course)!!! About bus speeds, unless the amiga gets someone serious to enter
- the hardware seen (say someone comes out with a Zorro III SCSI-2 controller or
- something like that,) you're not going to need the bandwidth. A good SCSI
- controller will operate at about 1 to 2 megs per second, which is about the
- maximum throughput of a fast SCSI drive (easily attainable with Zorro II and a
- '040.) Yes if Zorro III had some good expansion development (like EISA is
- now,)it would be worth the money to buy a 3000, but I don't know how you could
- justify spending that kind of money on the 3000 - '040 but as it stands, Amiga
- just doesn't have those devices...
-
- >
- >> As the last poster said, PP&S makes them. The only
- >> drawback is how much they cost ($2400 with no RAM (and no
- >> drive?), I think). As someone who just bought a
- >> Fusion-Forty and a GVP Series II for less than the
- >> equivalent single card solution, I should know.
- >>
- >> For me the extra disk performance wasn't worth the extra
- >> expense at this time. RCS (makers of Fusion-Forty) claim
- >> they will have a combination '040/SCSI card in the future
- >> that I'll be able to trade up to. I'll think about it. 'Til
- >> then, I'll just take advantage of the extra cycles.
- >>
- >> ab
- >
- >--
- > -Mike Schiller
- > CIS : 76416,3065
- > or 76416.3065@compuserve.com
- > BIX : schiller
- > UUCP : ...uflorida!novavax!agrijag!mike
- > GEnie: schiller
- ////////
- // twang@thor.albany.edu
- // TWANG@ALBNYVMS.BITNET
- // eddy Wang TW5232@ALBNYVMS.BITNET
- // Computer Art and Animation at SUNY Albany
- New Illusions Albany, NY "Increase the Peace..."
-