PentiumD, Dual Core, Core2Duo - all the same right?

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I'm still using an older Pentium 4 (2GHz) system... and the newer
"dual" systems are tempting.  However I see advertisements for some
"Dual Core" and "Core 2 Duo"   There is even a PentiumD chip - isn't
it technically 3 names for the same thing?

I'm assuming the only difference is the onboard cache and bus
speeds?   Otherwise their all "two cores on one chip" right?

Anyone wanna simplify this marketing nightmare?

Re: PentiumD, Dual Core, Core2Duo - all the same right? wrote:
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A Pentium D is not the same thing as Core 2 Duo.
It is a separate family. Core 2 Duo uses a lower clock
rate to get the job done. Core 2 Duo has a higher IPC
(instructions per clock). There are architectural review
articles around, that tell you how Core 2 Duo works.
But if you care not for such articles, then there are

Notice how the Core 2 Duo at 2.4GHz, wipes the floor with
the Pentium D 960 at 3.6GHz.

Intel Pentium D 960 Presler 3.6GHz 2 x 2MB L2 Cache LGA 775 $349

Intel Pentium D 960 Presler, 95W of power usage if a D0 revision.
130W of power usage if a C1 revision.

Intel Core 2 Duo E6600 Conroe 2.4GHz 4M shared L2 Cache LGA 775 $314

Intel Core2 Duo Desktop Processor E6600, 65W of power usage


Pentium D, Core Duo, and Core 2 Duo, are three different
families. Pentium D is "Netburst" and the same construction
techniques as Pentium 4 are used inside.

Dual core is used to refer to devices with two computing
cores inside. The cores may be separate pieces of silicon,
packaged in a common package, and sharing the FSB. Or the
cores may be integrated into the same piece of silicon
(which is harder to do, if you want to get a good yield
of working parts), in which case there are options for
how they share common resources like their cache. For
each family, it pays to track down a review article that
describes how they are constructed, if you really want to
know more about them.

Presler Pentium D uses two pieces of silicon.

Conroe (i.e. E6600) uses one piece of silicon.

This comparison article compares the processors in a
Linux environment.

If it isn't clear yet, buy a Core 2 processor.


Re: PentiumD, Dual Core, Core2Duo - all the same right?

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Nope.  They are all Dual Core, but all different.

Pentium D was the first generation, based on the P4 architecture.

CoreDuo and Core2Duo are the second and third generations, based on the
Pentium M architecture.  These are MUCH more efficient in processing power
and electricity usage than the Pentium D.  The Core2Duo is a slight
improvement over the CoreDuo.

A Core2Duo at 1.6 or 1.8 GHz is equivalent to about a 3 GHz Pentium 4 in
processing power.

Re: PentiumD, Dual Core, Core2Duo - all the same right?

They are NOT the same and they are incompatible to some extent. The latest
CPU's that are cool running and utilize a far more efficient internal
architecture are the Core 2 Duo's.  The Pentium D's run VERY hot and are
inefficent.  That's why they are cheaper.  Also, Core 2 Duo's will ONLY work
in the most recent versions of motherboards.  They are NOT backward

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