Excuse my ignorance but what is the difference between a 3.0Ghz Pentium Celeron and a 3.0Ghz Pentium 4?

This should really be in either "Buying and Upgrading Advice" or "Core Hardware".

First of all, there's no such thing as a Pentium Celeron. It's either a Pentium or a Celeron, not both. Pentium and Celeron are names for CPU's made by Intel. AMD is the other CPU manufacturer with names like Athlon, Duron, Sempron, etc.

Secondly, the differences are numerous depending on which versions of these CPU's you're talking about. There is no Celeron at exactly 3.0GHz, but there is the Celeron D 345/346 versions at 3.06GHz. For the Pentium name, the only one at 3.0GHz is the Pentium4, of which there are about 6 versions (including 3.06GHz). The P4 at a similar speed to a Celeron will in general be more powerful, have a faster FSB, and have more L2 cache. These aren't always the case (we can compare each version if you want) but are true in general.

Saph,

You have the patience of a Saint. ;)

Saph,

You have the patience of a Saint. ;)

Can I ask the favor about
what is the relationship of

Processor FSB ex. Celeron 1.70 ghz / 400 mhz FSB
to
Motherboard FSB ex. Asus P4vpmx FSB 533/400 mhz

and are the above Processor&MObo compatible to which DDR?
if more than is compatible which will be the best choice for the system

PC 266 - PC 2100 - PC 2700 - PC 3200

:)

Woah! Ok, how detailed do you want your explanation? :D

Simple answer: The FSB of the CPU must be supported by the mobo at the very least. The CPU core revision must also be supported by the mobo's chipset. If you do not know these things, just post the question here on the forums.

In the case of the Celeron 1.7 and that Asus mobo, yes they will work together. That's a Willamette-128 paired with VIA's P4M266A chipset. This combo likely won't make for the speediest PC on the block, but it will at least function.

The types of DDR RAM that you can use with that mobo are PC1600 and PC2100, up to 2GB I believe (2 slots). PC1600 is also known as DDR200, and PC2100 is DDR266.

That's the simple answer...

The CPU core revision must also be supported by the mobo's chipset. If you do not know these things, just post the question here on the forums.
How do these things related and/or simillar to each other?
1. CPU core ratio
2. CPU clock
3. System bus speed

What i already know is
ex. Pentium 3 500mhz
5 clock speed x 100mhz system bus = 500 mhz

but how Celeron 1.7 ghz became 1.7 ghz ? (specs are the same above)

and why did the shop installed a PC2700 ddr (specs are the same above)

Ok, these answers will be more complex...

Celeron 1.7 GHz works like this:
17.0x multiplier x 100 MHz (quad-pumped) FSB = 1700 MHz

The FSB for all of Intel's NetBurst-based CPU's have a quad-pumped 64-bit front-side bus, meaning that it can transfer 4 bits per clock cycle. So the FSB speeds you see for P4-based systems are always 400, 533, 800, and 1066. But those speeds are really quad-pumped 100, 133, 200, and 266 speeds.

As for the RAM discrepancy, this relates to the complete backwards compatibility of DDR RAM. There are no problems running PC3200 at PC2100 speeds, because you can always run RAM slower. Moreover, mobo's that can't use faster speeds of DDR RAM can slow it down to a speed that it can handle without asking for permission or requiring you to manually set the speed. Essentially, DDR RAM tells the mobo its max speed, and the mobo picks either that speed, or a slower speed that is the max for the mobo. This is all done automatically.

everything is CRYSTAL CLEAR !

THANX

Hey, saphalline, do you happen to have a link to were all the AMD and Intel prossesor's core revisions are listed? I'm interested in learning about the "older ones."

I'm afraid I've been neglecting it lately again, but you can always check out the website (http://www.sheaiden.com/) that Orion and I put together. I'll see if I can update that sometime soon - like within the next month. Lots of new CPU stuff lately...

Thanks Saphalline.

Hi Hockeyman,

I've just been using this site (to help me tell apart processors)
http://balusc.xs4all.nl/ned/har-cpu-int-p2.php

might be of use!

cheers
anton
;)