Very Computer

Thanks

NOTE THAT IT IS A PENTIUM 83MHz not an 84MHz!

: Thanks

The Pentium OD is more expensive, but should be much better than a 486 class
processor for floating point. Usually the only benchmark results you see
around the place are integer based, particularly for PC's.

good luck

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|        Javaan Singh Chahl,            |                             |

|     Centre for Visual Sciences,       |                             |
|Research School of Biological Sciences,|_____________________________|
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|             Australia.                |Ritchie, 1978  |      |______|
|_______________________________________|_______________|______|___|__|

        This is definitely a surprise to me, but given the performance of
the Pentium, this SHOULD be the case.  At any rate, given the extremely
high cost of the Pentium Overdrive, it's much more cost-effective to go
with a 486DX4/1x0.  These CPUs are dirt cheap and make great Linux boxes.

Mike.

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Quote:>high cost of the Pentium Overdrive, it's much more cost-effective to go
>with a 486DX4/1x0.  These CPUs are dirt cheap and make great Linux boxes.

I _would_ like to give an extra lease of life to my old machine, and
many tasks (particularly compilations) do seem to be (integer) CPU
bound, judging from xosview and other performance monitors (100% CPU
load with almost no paging, etc) -- but if I can't be sure that I can
use the AMD part in a plug&play way, then maybe I'm better off with
an Overdrive chip which IS guaranteed to "just plug in" in place of
the older CPU chip... given the price/performance promise of the AMD's,
though, I'd much rather go with one of those IF I knew it worked...

Alex
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Alex Martelli, Bologna, Italia -- DISCLAIMER: these are only MY opinions...!
 __   Man has no Body distinct from his Soul...         |  William Blake
 \/   Energy is the only life, and is from the Body...  |     DID know
      Energy is Eternal Delight.                        |  where it's at...

There shouldn't be any problem

-Chris

: : I'm upgrading my 486DX2/66 with either a Pentium overdrive (84MHz) or a
: : 486 DX4/100.  I'm mostly concerned with numeric computations.  Which
: : processor will give me the best performance in number crunching?

: : Thanks

: The Pentium OD is more expensive, but should be much better than a 486 class
: processor for floating point. Usually the only benchmark results you see
: around the place are integer based, particularly for PC's.

: good luck

: --
:  _____________________________________________________________________
: |        Javaan Singh Chahl,            |                             |

: |     Centre for Visual Sciences,       |                             |
: |Research School of Biological Sciences,|_____________________________|
: |   Australian National University,     |"hello world\n"|<---Quotation|
: |           Canberra, ACT,              |Kernighan &    |_____________|
: |             Australia.                |Ritchie, 1978  |      |______|
: |_______________________________________|_______________|______|___|__|

: The AMD DX4 class chips are 3.3V chips.... So long as you motherboard can
: be set to:
:       1) 3.3 (or better 3.45V) power
:       2) 40MHz and triple the clock
:       3) WriteBack cache (for SV8B chips, otherwise Write Through.)
:
: There shouldn't be any problem
:

There are also adaptors available so the AMD 3.3v chips can be used on
a 5.0v motherboard.  These are usally sold with the CPU and are only
$10-20 more.  This makes the upgrade very simple, you just leave the
board set for the intel chip and install the new CPU, change the bus
speed if necessary.  Definately much easier than tearing your computer
apart, and WAY cheaper if you don't know what you're doing.

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Finally, here are some numbers from the Ziff-Davis Winbench96 benchmark. CPU16
and CPU32 are 16- and 32- bit program suites.

Machine                         CPU16                   CPU32

AMD486/100                      126                     131
AMD486/120                      142                     158

Gateway 486/66 "Family PC"    65                      61
Compaq P5/66                    142                     144
Dell P/100                      204                     208

The last three machines are from the database of results that came with the
benchmark.

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