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twmonahan@gmail.com
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 Posted: Fri Feb 23, 2007 10:57 am Post subject: 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? |
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Paul
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| Posted: Fri Feb 23, 2007 12:16 pm Post subject: Re: PentiumD, Dual Core, Core2Duo - all the same right? |
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twmonahan@gmail.com wrote:
| Quote: | 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?
|
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
benchmarks.
Notice how the Core 2 Duo at 2.4GHz, wipes the floor with
the Pentium D 960 at 3.6GHz.
http://www23.tomshardware.com/cpu.html?modelx=33&model1=436&model2=432&chart=158
*******
Intel Pentium D 960 Presler 3.6GHz 2 x 2MB L2 Cache LGA 775 $349
http://www.newegg.com/Product/Product.asp?Item=N82E16819116247
Intel Pentium D 960 Presler, 95W of power usage if a D0 revision.
130W of power usage if a C1 revision.
http://processorfinder.intel.com/details.aspx?sSpec=SL9K7
http://processorfinder.intel.com/details.aspx?sSpec=SL9AP
*******
Intel Core 2 Duo E6600 Conroe 2.4GHz 4M shared L2 Cache LGA 775 $314
http://www.newegg.com/Product/Product.asp?Item=N82E16819115003
Intel Core2 Duo Desktop Processor E6600, 65W of power usage
http://processorfinder.intel.com/details.aspx?sSpec=SL9S8
*******
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.
http://www.tomshw.it/guides/hardware/cpu/20051228/images/presler_processor.jpg
Conroe (i.e. E6600) uses one piece of silicon.
http://www.linuxhardware.org/images/articles/conroe-082106/conroe-die-thumb.jpg
This comparison article compares the processors in a
Linux environment.
http://www.linuxhardware.org/article.pl?sid=06/08/22/0415251
If it isn't clear yet, buy a Core 2 processor.
HTH,
Paul |
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