Question Regarding CPUS (Old skools)

I was wondering...

What is the difference(s) between the:

Intel Pentium 4

Intel Pentium 4 Mobile

Intel Pentium M

Intel Celeron M

...More questions, what sets the Intel P4 and the INtel P4-M apart from one another, what sets the intel pentium m and the celeron m apart... The dominating product would be the INTEL p4?.. if all the CPU's were at lets say 1.8 Ghz?

Thanks

Steve

 

OKay I'll try to answer the best I can (I am not very sure about some of them).

Intel Pentium 4 - It's a desktop processor, but it is used in some crappy notebooks. It's probably slightly faster than Pentium M.

Intel Pentium 4 Mobile - Mobile version of Pentium 4. It has about the same speed as Pentium M, but uses more power. I think it really reduces the laptop battery.

Intel Pentium M - I think this was the best mobile processor until the introduction of Yonah and Merom (Core duo and Core 2 duo).

Intel Celeron M - Budgeted version of Pentium M. Slowest of them all, but more importantly, it lacks speedstep, which makes it run really hot in laptops. Also, I think it has a smaller L2 cache. Not sure.

I believe in terms of speed, these 4 processors would rank in the following manner:

Pentium 4 > Pentium 4 Mobile = Pentium M > Celeron M

Hope this helps!

 

You're both as wrong as it gets in terms of performance.

The pentium M is a much better performer than a p4 at the same speeds.

A 1.8GHz PM will blow a similarly clocked p4 out of the water, if not worse. Such a PM is equal to about a 2.9GHz p4.

So it goes like this: Pentium M>Celeron M>P4=P4M.

 

Pentium M is definitely more powerful than a P4.

 

Agreed. Pentium M's are great. I used to use a P4 with HT for research and started doing the same research on a Pentium M and it was much faster.

 

Yes, a Pentium M at the same clockspeed will be the fastest of all the other CPUs, don't be fooled by the clock speed. The Celeron M is a budget version of the Pentium M, having half the L2 cache and no speed stepping ability, so it always runs at full blast but it is still a decent processor. The Pentium 4s in notebooks gave really 1-1.5 hours of battery life at best, lots of heat, mostly in desktop replacements of course.

 

Having owned both I can say that my Celeron-M 300 series outperforms a Pentium 4 by around 40% clock for clock. The -400 and -500 series Celeron-Ms (Core based) are significantly faster than mine clock for clock and own any P4 even a 3.4GHz.

We have now come to a point where the newer Core based Celerons outperform a Pentium-M clock for clock in terms of pure processing power but they still lack speedstepping which means they are pretty tough on battery life.

Not at all. It is true that the Celeron-M idles at higher temperatures due to the lack of speedstep but it usually runs at lower temps than high-performance cpus when under load. My Celeron-M has never been above 65 degrees C which cannot be said for a lot of P4s, P-Ms and especially Core Duos which frequently go over 70 and even 80 degrees C under load.

 

Hold on here. the latest P4s are faster than the P-Ms for some applications, although not at the same clock speeds. A 3.0 GhZ P4 will outperform a 1.86 GhZ P-M for most applications. But considering the heat produced and the energy required it is not a good choice for a laptop.

 

Yes obviously. But the first guy was just comparing a 1.8GHz P4 with a 1.8GHz PM wich is not even debatable.

 

No, not "obviously". The point I'm making is you can't compare a P4 1.8 to a P-M 1.8, as they are generations apart. At the time the P-M 1.86 GhZ processors were making their way into notebooks, they were replacing P-4 3.0 GhZ processors, not due to performance but due to heat generated and energy consumption. The P-4 3.0 used hyperthreading and other technologies that didn't exist in the P-4 1.8 GhZ as well. I'm just trying to compare apples to apples. Desktop P-4 processors still sell well, and are favoured by some over the latest core processors due to lower price points and better overall power when not constrained by heat and power limitations.

 

as Core CPUs have come out, even the pentium M, which is still produced, is 2 generations old, and is not really future proof.

A mobile Pentium 4 offers very similar perfromance to a P4 Northwood, because in fact, it is a revised version of the Northwood thats simply popped into the notebook case to make the P4M.

The P4M gives better performance than the Willamette, but the newer Gallatin, Prescott and Cedar Mill CPUs are a lot faster.

A P4 isn't just one exact CPU. There are many different versions of it. The manafacturing processes range from 180 nm to 65nm, used in the Cedar Mill core.

Dual core versions of the modified Cedar Mill, resulted in name: Pentium D.

You should really avoid P4M. Even after buying a new battery, my Inspiron 8200, only manages around 30 mins at the max.

Pentium M is the best choice. It has a good TDP rating, and is very efficient, compared to the P4M and Celeron.

 

No, not "obviously". The point I'm making is you can't compare a P4 1.8 to a P-M 1.8, as they are generations apart.

Yes you can, cause they run the same systems and the same OS with the same applications.

That being said, the P4 sucks when compared to the PM. I've owned both, and I've done quite a few side-by-side comparisons as my girlfriend had a P4 notebook up until last semester.

They work well, and last I checked they could still run games and all the office apps and other programs, and as Cheffy said the price is MUCH better now. But those processors haven't been the king of performance for some time.