RE: NEC-LIST:P4 vs. Xenon

Bill,
        I couple of years ago when the 500-MHz Intel Pentium III Xeon Processor
first came out, Dell convinced me that the Xeon would have similar
advantages to what the Pentium Pro had over the standard Pentium. Primarily
they touted the full speed cache for providing a significant increase in
floating point calculations. Therefore, I bought a dual 550-MHz PIII 610
workstation. Low and behold there was no speed increase within a single
processor over a standard PIII. If you are running NEC from Nittany
Scientific, their programs can take advantage of the dual processors and
give you about a 70% speed increase but this has nothing to do with the Xeon
technology.
        I am quickly getting out of me area of expertise here but I have been told
that only limited software applications (usually server software) utilize
the Xeon technology. Unlike the Pentium Pro that needed no special programs
to take advantage of the cache, the Xeon requires special software.

Bottom line, the Xeon does not help but the dual processor can with the
right NEC program and proper system settings.

Keith Lysiak

-----Original Message-----
From: nec-list-admin_at_gweep.ca [mailto:nec-list-admin_at_gweep.ca]On Behalf
Of Bill Cummins
Sent: Tuesday, July 30, 2002 10:20 AM
To: nec-list_at_gweep.ca
Subject: NEC-LIST:P4 vs. Xenon

Does anyone have any data on the relative speeds the P4 and Xenon
processors doing NEC calculations? Assume they are running comparable
clock, bus rates and either Linux or Win OS's.. I am not sure the Xenon is
worth the extra cost in single processor configurations.

Bill Cummins

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