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Intel Celeron Processor

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#1 KMF


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Posted 27 November 2006 - 09:13 AM

Need to know what the difference is between Celeron and Pentium. What's good, bad, otherwise on both. Am looking to buy a notebook.



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#2 tg1911


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Posted 27 November 2006 - 09:28 AM

"The big difference between the Premium chip (Pentium) and its bargain cousin (Celeron) is the
amount of on the chip memory (Cache).
There are two types L1. or instruction sets (tells the processor what to do with the data it
recieves). and L2 memory cache (retains data which has just been worked on and will be
processed more, or data "prefetched" in anticipation of its being next to be worked on).

For example , the L2 cache on a P4 is 512KB (later versions now have 1MB) while the celeron
has only 128KB. Similar ratios apply to the instruction set memory.
Also there is a component called Prefetch, or prediction architecture, where the processor
looks at the data it is working on, and guesses what data it will need next, and fetches it to
L2 cache.
This cache works at the same speed as the processor, as opposed to the speed of the RAM. SO
the processor can swap things in and out of it , basically as fast as it works.

The end result is that the P4 is going to be more efficient. It will not have to stop working,
and wait for new data to be sent to it as often, as a celeron will. SO on many intense tasks
(photoshop, games), a celeron might just sit there over half the time because it guessed wrong,
or has finished with all the data it has, and needs to wait for more to get sent from RAM.
Meanwhile a P4 would still be plugging away at the next set of data.

Additionally there is hyperthreading in newer P4, this allows them to work on multiple
independent tasks simultaneously, if the data in one task is not enough to use the entire
processing capacity .

So, if you can afford the premium, it is a better processor, if you actually need the
processor to do something.

Basics, like email and surf the web, you will notice no difference.
Intense things like editing graphics, or gaming, you will see a big difference."

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#3 usasma


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Posted 04 December 2006 - 06:21 AM

Core Duo is best
Dual Core is next
Pentium is next
Celeron is last

This really doesn't make a whole lot of difference to the average user (sufs the web and checks email). But if you're playing games or editing video, pictures, music or any other CPU intensive app - you'll need the best that you can afford.
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