Re: Debate: PowerMac "trounces" Pentium....???

Article View: comp.sys.powerpc

Article #2673

#2673

From: Robert Barris
Date: Mon, 08 Jan 1996 23:29

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In article <30F193AD.4733@medcor.mcgill.ca>,
Robert Salasidis  <salasidis@medcor.mcgill.ca> wrote:
>karl unterkofler wrote:
>> 
>> In article <4bvd1r$qn3@sloth.swcp.com>, "Harlan W. Stockman"
>> <hwstock@swcp.com> wrote:
>> 
>> > sidea guys <sidea8120@sidea.com> wrote:
>> > >i personally noticed a big difference in speed going from a win 95 P120
>> > >16-4x to a PPC 100 (pmac7500) 16-4x, like maybe 15 percent or more. I was
>> >
>> > Could you be more specific?
>> > In what applications, or with what
>> > benchmarks, did you personally see
>> > the difference?  "15 %" makes it
>> > sound as if you have some exact timings.
>> 
>> A simple test with Mathematica:
>> 
>> Timing[N[Sin[1/2],2500]][[1]]
>> 
>>      PowerMac 8500/120, 16M RAM:             1.43 Second
>>      Dell Dimension XPS P120c, 16Mb, 512K:   4.27 Second
>> 
>> Timing[10001!][[1]]
>> 
>>      PowerMac 8500/120, 16M RAM:             2.32 Second
>>      Dell Dimension XPS P120c, 16Mb, 512K:   4.31 Second
>> 
>> Regards, Karl
>
>Nobody argues that the PPC is faster in floating point. However for most 
>users, 99% of the time is spent in integer functions. Integer benchmarks 
>show that there is very little diffeence between the 2 processors (and 
>at least the x86 camp has a Pentium Pro to upgrade to today).

Mathematica is almost entirely integer based, especially when it comes to
symbolic work and arbitrary precision math as in the factorial example
above.

Or did you think 10001! could fit in a 64 bit float?

Robert.

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Newsgroups: comp.sys.powerpc,comp.os.linux.advocacy,comp.sys.mac.advocacy,comp.os.os2.advocacy,comp.sys.amiga.advocacy,comp.sys.intel,alt.2600
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From: rbarris@netcom.com (Robert Barris)
Subject: Re: Debate: PowerMac "trounces" Pentium....???
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References: <m.duran-1611950252110001@port19.codetel.net.do> <4bvd1r$qn3@sloth.swcp.com> <karl-0801961004470001@fampm201.tu-graz.ac.at> <30F193AD.4733@medcor.mcgill.ca>
Date: Mon, 8 Jan 1996 23:29:30 GMT
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