johnm@trsvax.UUCP (02/22/89)
If you have an Inboard 386 in a Tandy 1200 or IBM PC (or any machine of the old 4.77Mhz family) you can answer me a question. How much of a speedup could I expect from installing one? Obviously the hard disk will still be the same old turtle but the cpu should scream. Is it at least a factor of 5 overall (say for a compile)? John Munsch
barry@dgbt.uucp (Barry Mclarnon) (02/27/89)
From article <216100083@trsvax>, by johnm@trsvax.UUCP: > > If you have an Inboard 386 in a Tandy 1200 or IBM PC (or any machine of > the old 4.77Mhz family) you can answer me a question. How much of a > speedup could I expect from installing one? Obviously the hard disk will > still be the same old turtle but the cpu should scream. Is it at least > a factor of 5 overall (say for a compile)? I don't have any benchmark results handy, but a factor of 5 improvement for a compile should be a _very_ conservative expectation, and a factor of 10 is probably closer to the mark. Use of ramdisks, and/or the extended memory cache software supplied with the board, will help a lot with those slow disk accesses too. For what it's worth, the Inboard gets a 16.6 computing index from the Norton 4.0 SI. And the best news of all is that the price of the board and its piggyback memory boards has recently come down - you can now pick up an Inboard for <$600, and the 2 Meg daughterboard populated to 1 Meg for <$350. -- Barry McLarnon Communications Research Center Ottawa, ON Canada UUCP: ...utzoo!bnr-vpa!bnr-rsc!dgbt!barry INTERNET: barry@dgbt.crc.dnd.ca Compu$erve: 71470,3651 Packet radio: VE3JF @ VE3JF
allbery@ncoast.ORG (Brandon S. Allbery) (03/02/89)
As quoted from <216100083@trsvax> by johnm@trsvax.UUCP: +--------------- | If you have an Inboard 386 in a Tandy 1200 or IBM PC (or any machine of | the old 4.77Mhz family) you can answer me a question. How much of a | speedup could I expect from installing one? Obviously the hard disk will | still be the same old turtle but the cpu should scream. Is it at least | a factor of 5 overall (say for a compile)? +--------------- Norton's SI jumped from 1.0 to 13.7 on my ITT XTRA. I don't know about overall performance, since I got the card for use with Windows, which throws its own curves at the speed equation. And I don't have a C compiler to test with, anyway. ++Brandon -- Brandon S. Allbery, moderator of comp.sources.misc allbery@ncoast.org uunet!hal.cwru.edu!ncoast!allbery ncoast!allbery@hal.cwru.edu Send comp.sources.misc submissions to comp-sources-misc@<backbone> NCoast Public Access UN*X - (216) 781-6201, 300/1200/2400 baud, login: makeuser
phipps@garth.UUCP (Clay Phipps) (03/04/89)
In article <216100083@trsvax> johnm@trsvax.UUCP writes: > >If you have an Inboard 386 in an ... old 4.77Mhz ... IBM PC ... >how much of a speedup could I expect from installing one? >Obviously the hard disk will still be the same old turtle >but the cpu should scream. Is it at least a factor of 5 overall (...)? I finally installed my long-neglected Inboard 386 in a 64 KB PC-1 (after retiring my AST ComboPlus board), and the Norton (version 4.5) "SysInfo" rating leaped from 1.0 to 16.5. I admit that I haven't paid much attention to measurement of performance improvements in real applications; I've been busy *using* them (toward a deadline that is about a week away). I am in the process of installing lots of new software and hardware, such as a notorious 38 ms-access 40 MB-capacity 5_1/4 in. hard disk, so as to overcome some severe limits on what I could do with the PC. My previously sluggish but simple software seems almost instantaneous. I never had enough installed RAM until the Inboard for today's system resource hogs. Your mileage will vary. -- [The foregoing may or may not represent the position, if any, of my employer, ] [ who is identified solely to allow the reader to account for personal biases.] Clay Phipps {ingr,pyramid,sri-unix!hplabs}!garth!phipps Intergraph APD, 2400#4 Geng Road, Palo Alto, CA 93403 415/494-8800
mvolo@ecsvax.UUCP (Michael R. Volow) (03/06/89)
[deleted stuff about Inboard 386/PC installed in old IBM PC] How does the speed of the IBM PC with the Inboard 386/PC compare with a 80286 0 Wt State 8 Hz AT Clone? Is the 1 meg of included memory enough for applications other than [Dlarge spreadsheet/data base files, e.g. enough for applications such as WordPerfect 5.0? If you added memory, how much did you add? What is the smallest amount of memory you can add with the daughter- board? M Volow, VA Medical Center, Durham, NC 27705 mvolo@ecsvax.UUCP
barry@dgbt.uucp (Barry Mclarnon) (03/08/89)
From article <6605@ecsvax.UUCP>, by mvolo@ecsvax.UUCP (Michael R. Volow): > > How does the speed of the IBM PC with the Inboard 386/PC compare > with a 80286 0 Wt State 8 Hz AT Clone? The Inboard runs at 16 MHz, but with 2 wait states (it uses 120 ns DRAMS). It still should have a significant edge over the AT clone in benchmarks that don't involve disk i/o though. > > Is the 1 meg of included memory enough for applications other than > [Dlarge spreadsheet/data base files, e.g. enough for applications such > as WordPerfect 5.0? Yes. Of the 384K of "nonconventional" memory on the board, 128K is used for ROM BIOS shadowing (optional) and internal uses, and is not otherwise available. The other 256K is available as extended memory, or it can be converted to 192K of expanded memory. The Inboard comes with custom versions of the Super PC-Kwik cache software (uses extended memory) and 386-to-the-max (for memory mapping). > > If you added memory, how much did you add? > What is the smallest amount of memory you can add with the daughter- > board? You can add either 1, 2, or 4 Megs. The first two options via the daughterboard which takes 256K chips and is available half- or fully- populated, and the second via the daughterboard which uses 1 Meg chips and is only available fully stuffed. Current prices are roughly $350, $700, and $1200 respectively (e.g., $349 for the 1 Meg from PC Connection in NH). > > M Volow, VA Medical Center, Durham, NC 27705 mvolo@ecsvax.UUCP Barry McLarnon -- Barry McLarnon Communications Research Center Ottawa, ON Canada UUCP: ...utzoo!bnr-vpa!bnr-rsc!dgbt!barry INTERNET: barry@dgbt.crc.dnd.ca Compu$erve: 71470,3651 Packet radio: VE3JF @ VE3JF