Archived from groups: alt.comp.hardware.overclocking,alt.comp.hardware.pc-homebuilt,uk.comp.homebuilt (
More info?)
"Dennis E Strausser Jr" <dstrausser33@comcast.net> wrote in message
news:heudnVkeAdtlB5PcRVn-gA@giganews.com...
> "Johannes H Andersen" <johs@nsaeccueuesizefitterwruovweswernuao.com> wrote
> in message
news:410E37F8.3FE1B60A@nsaeccueuesizefitterwruovweswernuao.com...
> >
> >
> > Dave wrote:
> > >
> > > "Dennis E Strausser Jr" <dstrausser33@comcast.net> wrote in message
> > > news:j-2dnZB-Pb8Pj5bcRVn-iQ@giganews.com...
> > > > "Johannes H Andersen" <johs@nsuvuooiaiosizefitterwiuoveswernuaz.com>
> wrote
> > > > in message
> > > news:410AF477.32FAE761@nsuvuooiaiosizefitterwiuoveswernuaz.com...
> > > > >
> > > > >
> > > > > JK wrote:
> > > > > >
> > > > > > The dual channel of the P4 is relatively slow though since the
> > > > > > memory controller is not on the chip. Look at the actual
> benchmarks
> > > > > > comparing the two. The article has benchmarks for both socket
> > > > > > 754 and socket 939 Athlon 64 chips.
> > > > > >
> > > > > >
http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2065&p=1
> > > > >
> > > > > So?
> > > > >
> > > > > The dual channel memory 2xDDR400 for the P4 matches the fsb = 800
> MHz,
> > > > > this is the optimal situation.
> > > > The P4 is not 800 fsb, it's 200
> > > > It works something like the Athlon Xp, but does it twice.
> > > > To better explain this, here's an email I got from AMD
> > > >
> > > > Hello Dennis,
> > > >
> > > > Thank you for contacting AMD's Technical Service Center.
> > > >
> > > > The Athlon XP has a Front Side Bus (FSB) that operates at either
266,
> > > > 333, or 400Mhz. While the physical signal is 133, 166, or 200Mhz,
data
> > > > is transferred on both the rising and falling edges of the clock
> > > > signal. This effectively doubles the data throughput. This is
similar
> > > > to the operation of DDR memory and 2X AGP. Motherboards that support
a
> > > > 400, 333, 266, and 200MHz front-side bus (FSB) will typically have a
> > > > factory-default FSB setting of 200MHz (100MHz system clock) to
protect
> > > > 200MHz FSB processors from accidentally being overclocked. If an
> Athlon
> > > > XP processor, which supports a 400, 333 or 266MHz FSB, is installed
on
> > > > a motherboard that is configured to operate the FSB at 200MHz, it
will
> > > > operate at a lower frequency. This is a result of the processor's
> > > > multiplier. The function of the multiplier is to multiply the bus
> > > > frequency to derive the processor operating frequency.
> > > >
> > > > The actual setting of the FSB may be controlled by the motherboard
> BIOS
> > > > or by a hardware jumper on the motherboard itself. Please consult
your
> > > > motherboard manufacturer directly to determine how to correctly set
> the
> > > > FSB for your motherboard.
> > > >
> > > > Hope this helps. If you have any other questions, please feel free
to
> > > > contact me.
> > > >
> > > > Regards,
> > > > Jesus
> > > > Customer Support Analyst
> > > > AMD TSC
> > > >
> > > >
> > > > We welcome your feedback and suggestions to help us improve our
> > > > services to you. To provide this information to us, we ask that you
> > > > please click on this link, or copy/paste into your browser, and
> > > > complete our short survey. Thanks, in advance, for your comments.
> Click
> > > > here (link
> > > >
> > >
>
http://asksurvey.amd.com/servicesoft/servlet/EmailSurvey?emailID=345382&email=dstrausser33@comcast.net).
> > > >
> > > >
> > > > P.S. Please visit our online technical support tools, Ask AMD
> > > > (http://ask.amd.com) and our Processor Support Forums
> > > > (http://forums.amd.com). Ask AMD is our online knowledgebase that
> > > > contains many solutions to common questions. Our Processor Support
> > > > Forums are an online community where users can assist each other
with
> > > > many different issues. There's a good chance these tools can help
> > > > answer your next question!
> > > >
> > > >
> > > > Original Message Follows:
> > > > ------------------------
> > > >
> > > >
> > > > Form Message
> > > >
> > > > Processor Type: Athlon XP
> > > > Escalated From: startup
> > > > Processor Model: 2200+
> > > > Knowledge Base: Processor
> > > > Email Address: dstrausser33@comcast.net
> > > > Full Name: Dennis E Strausser Jr
> > > > Message Body: (FSB) & Bus Speed. If a CPU has a FSB of 133, that
would
> > > > mean the Bus Speed is 266? So like My 2200+ I have is 266 Bus Speed,
> and
> > > > 133 (FSB)? And a 2800+ would be 166 FSB (166.5)? What I need is a
link
> > > > if I'm right, if I'm wrong, I still want that link. I was trying to
> tell
> > > > some1 that I thought that's the way it works, and he said I'm wrong.
> So
> > > > I'm sure you guys can tell me, after all, they are your CPU's 2200+?
> > > > 2600 @ 2.17 GHz,,, But you didn't need to know I'm Overclocking one
of
> > > > your CPU's. Denny.
> > > > Subject: FSB & Bus Speed
> > > > User Type: Reseller/System Builder
> > > > Knowledge Job Ticket: 0000000000169818213:5486
> > > > Knowledge Session Log URL:
> > > >
>
http://139.95.253.213:80/SRVS/CGI-BIN/WEBCGI.EXE/,/?SessLog,e=0000000000
> > > > 169818213,K=5486
> > > > Location: USA/Canada
> > > >
> > > > What this all means?
> > > > I'll break it down.
> > > > the rising and falling edges of the clock
> > > > signal are still working for the most part, the same way as an amd.
> > > > But.
> > > > 200 x 200 rising and falling edges of the clock signal.
> > > > 200 x 200 rising and falling edges of the clock signal.
> > > > Don't take my word for it, this is just a guess.
> > > > But it does seem like a good guess to say that's how it's
> Hyperthreading
> > > > works.
> > > > Back when it was just Hyperpipline, I think it helped to keep the
cpu
> > > > running smooth.
> > > > And keep the bottle neck as low as possible.
> > > >
> > > > If anyone has more input on this, or if I'm wrong, correct me.
> > > > thx..
> > > > Denny.
> > > >
> > > Hmmm, good questions.
> > >
> > > I have some that can be added. To get the 800MHZ data rate do you
need
> 4
> > > memory DIMMs (sticks) or can it work with only two standard ones?
> > >
> > > Dave
> >
> > Two standard ones, that is two DDR400. The DDR means Double Data Rate,
> > dual channel is on top of that, hence 800MHz transfer rate = 6400000000
> bits/s.
> Righ, ty.
> If you use two, also make sure they are installed right.
> What I mean is, don't just use dimm slots 1 & 2 Most boards will just
give
> you the ram you just installed.
> Like 2 x 512 for 1Meg (1Gig) Oops....
> Use dimm slots 1 & 3 or 2 & 4, if your board has 4
> This gives dual channel mode.
> Denny.
>
>
In reply to myself,,,, Oops. 1Gig..
Denny.
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