| Pete Dashwood 2007-10-14, 7:55 am |
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"Tim Josling" <tej@melbpc.org.au> wrote in message
news:13h3eju5ljob00d@corp.supernews.com...
> On Sat, 13 Oct 2007 21:44:09 -0400, Rick Smith wrote:
>
>
> You may have been conned.
>
> The P4 has (in some models) "hyperthreading". The system shows 2 CPUs but
> they share most resources so you only get the throughput of about 1.15
> CPUs. It is quite a stretch to call this "multicore".
I agree. I also think that Robert's point about 64 bit may be relevant.
>
> Combine this with the fact that a P4 does not deliver anywhere the
> processing per MHz that an Athlon XP does, plus the high power
> consumption of the P4 and you have bought a lemon.
>
> The results you report are quite consistent with the CPUs described.
>
> Intel's later models such as Core 2 Duo have two or more real
> full processing engines per unit and deliver exceptional performance. I
> just bought a system based on a QX6600 4-way.
I'm writing this on a Core 2 Duo (Intel Centrino T7200 - 2GHz) with 2 GB of
memory. It is 64 Bit (currently running Win XP/SP2) and I have not noticed
significantly faster throughput in COBOL applications. Having said that,
they're certainly not running slower...:-) Obviously, I can't recompile them
to 64 bit as I don't have a 64 bit compiler (if there even is one for
Fujitsu), but it seems reasonable to me that, given a 64 bit OS, and a 64
bit run time, performance improvement could be expected.
Pete.
--
"I used to write COBOL...now I can do anything."
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