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- Path: nntp.teleport.com!sschaem
- From: sschaem@teleport.com (Stephan Schaem)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: CHIP RAM speed test resul
- Date: 29 Mar 1996 02:44:25 GMT
- Organization: Teleport - Portland's Public Access (503) 220-1016
- Message-ID: <4jfiq9$61g@nadine.teleport.com>
- References: <64_5494@tna.nullnet.fi> <xR2rDMD0alz7@point86.people-s.people.de> <38233078@kone.fipnet.fi> <1549.6652T1430T1450@mbox.vol.it> <4isfo0$pfe@serpens.rhein.de> <2095.6655T1000T1836@mbox.vol.it> <4j6ued$idp@sunsystem5.informatik.tu-muenchen.de> <4j8l4c$qpu@nadine.teleport.com> <4j8uv1$afq@serpens.rhein.de> <4jac92$coa@nadine.teleport.com> <4jauvg$jji@serpens.rhein.de> <4jbs77$97@nadine.teleport.com> <4jc15o$lvg@serpens.rhein.de>
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- Michael van Elst (mlelstv@serpens.rhein.de) wrote:
- : sschaem@teleport.com (Stephan Schaem) writes:
-
- : >: There is no difference. The board supports 16MHz and 25MHz operation.
-
- : > I think there was a significant price diference betwen the 25mhz and
- : > 16mhz version... Would have been nice that the 16mhz offer socket, and
- : > optionaly a 68882.
-
- : It offered a 68881 standard.
-
- I think a plain socket would have been better.... at least it would give
- a choice of: x81, x82 or nothing. I would have choosen nothing, and be
- glad to pay for the socket so I could upgrade if I needed to.
-
- : > I guess I was just thinking of the simplicity of upgrading in the PC world.
- : > move a jumper, change the chip and you go from a 75mhz cpu to 150mhz,
-
- : Well, this is a) the exception, b) a waste because the 75MHz board
- : will still run slow.
-
- The board will run with the same bus clock, so? its not like because
- you have a double speed CPU that you can double the speed of your
- ram and device sitting on the bus.
-
- : > So no 'DX2' type 68030 for easy upgrade?
-
- : There is no DX2 type for easy upgrade and with a 030 it wouldn't do any
- : good. You need a big on-chip cache to get at least a tiny bit of extra
- : performance.
-
- Does it really make a diference for a 030 to have a 50mhz bus clock?
- 25mhz sound even high to me for a chip like the 68030.
-
- How would a 25mhz 030 with a /2 (12mhz) bus clock perform
- with 0 waitstate memory compare to 030 design in your A3000?
-
- Stephan
-