Do you know anything about the memory interconnect
on 2/4 cpu intel boxes...in other words, if I get
a 1+ cpu box and have a memory intensive app,
do I get bogged down relative to the same
app on 1+ seperate boxes? [ Let's assume that
my app is trivially parallelizable ]
Russ
Joel Jaeggli wrote:
>
> The only significant design difference is l2 cache design. Your PIII has
> 512k of 1/2 processor speed l2 cache (ie. on the 500mhz part the l2 cache
> runs at 250mhz). The XEON has 512k, 1024k or 2048k of L2 cache running at
> the processor core speed (in the xeon's case 400 450, or now 500mhz). SRAM
> that runs that fast is a really spendy part, alhough it certianly doesn't
> justify the price premium that intel's charging on the 1MB+ items.
>
> Recently I've been using celeron 333 and 400 cpu's in slot-1 boards for
> server boxes. you can allways replace them with a pIII when you need more
> horsepower and the price/performance ratio of what's essentially an $80
> pII is pretty darn good as far as intel goes.
>
> For me, the only reall motivation for jumping to xeon's would involve
> either wanting more than 2 cpu's per box, or wanting some of the more
> exotic features of the 450nx chipset like more dimm sockets so you can get
> to 1gb+ using cheaper memory(256mb dimms instead if 512MB), having 4 64
> bit pci slots. I2O developement for linux might eventually make these
> boards much more interesting, but I'd reserve judgement until I've had the
> opportunity to play with one. certain peoples applications will probably
> run much better with a far larger/faster l2 cache, but you're mileage may
> vary...
>
> On Thu, 18 Mar 1999, Russell Leighton wrote:
>
> > Could someone that understands the
> > differences between PIII and Xeon PIII
> > please outline the major *pragmatic*
> > differences...in otherwords, for example,
> > if you were buying a new computer for
> > Linux why would you choose a PIII vs a
> > Xeon PIII (what kinds of apps/services
> > would benefit from one versus another)?
> >
> > My particular problem is to find a cost
> > effective platform for a service that
> > lives behind/within a http server...it
> > must be as fast as it can...but price
> > plays in too 'cause on deployment there
> > may be alot of 'em. Advice?
> >
> > Thanks in advance.
> >
> > Russ
> >
> > --
> > ------------------------------------------------------------
> > Russell Leighton leighton@imake.com http://www.imake.com
> > ------------------------------------------------------------
> >
> > -
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>
> --------------------------------------------------------------------------
> Joel Jaeggli joelja@darkwing.uoregon.edu
> Academic User Services consult@gladstone.uoregon.edu
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> --------------------------------------------------------------------------
> It is clear that the arm of criticism cannot replace the criticism of
> arms. Karl Marx -- Introduction to the critique of Hegel's Philosophy of
> the right, 1843.
-- ------------------------------------------------------------ Russell Leighton leighton@imake.com http://www.imake.com ------------------------------------------------------------- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/