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Confusion with processors

I was once confused with intel celeron vs pentium processors. Now i have got another confusion regarding the diffrerence among "Pentium D(Dual Core)", "Core2 Duo", "Core2 Quad", and "Core2 Extreme". My thoughts were like this, Dual core means single processor with 2 ALU, core2 Duo means 2 processors with 2 ALU's and core2 quad means 2 processors with 4 ALU's. Some of my friends also told me the same thing. But recently i found in some forums that my conceptions are not correct! But i didn't find any good difference among them after searching through the internet.

Now i don't know any good differences among them. Can anyone please help me to know the information or can explain me what are the differences?

Reply to
nasif4003
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I don't think I'd recommend any of them for embedded use...

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Grant Edwards                   grante             Yow!  Spreading peanut
                                  at               butter reminds me of
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Reply to
Grant Edwards

Except for a toaster, or maybe an indoor grill.

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Kevin D Quitt  USA 91387-4454         96.37% of all statistics are made up
Reply to
Kevin D. Quitt

Pentium D(Dual Core) - stop gap attempt at a dual core processor after AMD caught them flat footed. Had a horrible memory interface and poor performance

Core2 Duo - second attempt with a more reasonable memory interface

Core2 Quad - 2 Core2 Duo in a single package to beat AMDs real quad core chip due later this year, again a bit of a memory interface kludge (now you know why intel chips have an obscene amount of cache)

Core2 Extreme - no idea but sounds expensive.

Reply to
Dennis

The "extreme" chips have more cache and allow overclocking.

Reply to
DJ Delorie

Core, here, means processor core (i.e. processors). The Pentium D has two Pentium4-class processors inside. The Core2 Duo has two Core2-class processors inside. The Core2 Quad has four processors inside but the current implementations are two Core2 Duo *chips* in one package. ALU's are a complete red herring. The Extreme processors are just the top end versions sold typically for gaming, where overclocking is the norm and valiant efforts to keep things cool enough are part of the 'fun'.

Pentium4-class processors are effectively obsolete, with all new devices being Core2 based. The Pentium 4s clock faster and use much more power but delivr inferior performance in most situations. Each Pentium 4 core can execute up to 3 instructions per clock while each Core 2 core can execute up to 4. The key here is 'up to' and how close they get to that peak performance.

Peter

Reply to
Peter Dickerson

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