Celeron M 360 to Pentium M 735

I am considering upgrading my Toshiba L25-S1196 CPU. My current CPU is the Celeron M 360. I have found a few Pentium M 735's for under $50. The difference between the two (as listed in Comander Wolf compatibility list is:

Pentium M 735 1700 2048 400
Celeron M 360 1400 1024 400

Do you think I will see a significant enough improvement to warrant the upgrade?

 

If not a small boost in performance, you will, at the very least, see an increase in battery life due to the enabling of SpeedStep in the Pentium M. With the 735 under $50, I'd say it's a decent upgrade.

 

You might want to consider picking up a 745 or 755 instead as the price difference between them wouldn't be too different, but the speed boost would be significantly faster than the Celeron M 360. There are a bunch of them on Ebay going for about that price.

 

Did a little research, your lucky as the 200M chipset supports newer Dothans! You should look at getting a 740 or 750 processor as that would ramp up the FSB to 533 FSB. Or better yet, if your technically capable, doing the Pin-mod on a 725 processor would run the processor at 2.13Ghz (like on my W3V).

 

Thanks for the good advice all. I have a few follow-up questions for D3X, if you have a moment. You said that you brought your 725 to 2.13Ghz by way of a pin-mod. As I understand it, isn't the mod simply to up the FSB 400 to 533. Was the jump from 1.6Ghz to 2.13Ghz by way of overclocking?

Also, price not considered, would you suggest the 740, 750 or the modded 725 as you described?

One more thought... Could the BIOS block me from installing a 533mhz? If so I have more homework to do

 

Consider buying a new dual core notebook. Best Buy has two for $499 so not sure if upgrading is economical prudent.

 

I doubt the faster FSB on the 740 makes much of a difference, but the Dothan Pentium Ms run cooler and are less noisy.

 

The 735 is Dothan anyway...grrr I have a 725 and a 400mhz chipset, no pin-mod for me And a 755 cost so much.

 

Actually it does, for whatever reason the Dothan Pentium-Ms post significantly quicker scores in benchmarks than similar 400MHz FSB models.

 

Actually, mine is running a 735 running at 2.26Ghz, utilizing the pin-mod on the Intel 915(Sonoma) chipset. Yes, the mod simply tricks the BIOS into thinking that the 725/735 processor is a 533Mhz chip instead. 533Mhz is the system bus speed in a way of being quad pumped Frontside bus of 4x133, so instead of 16X100=1.6Ghz for the processor, it's 16x133=2.13Ghz. So in otherwords, the CPU is being overclocked because your running the chip at a higher frequency. An overclocked Dothan performs exactly the same as stock Dothan at the same speed(so my [email protected] = [email protected]), and would benefit from things like Speedstep as well.

Well my suggestion will be biased, simply because I'm more of a tweaking/enthusiast, and I would naturally suggest the cheaper more effective method of reaching a higher performance system. The only reason why I recommend the 725 over a 735 is that the overclock success "chance" is much lower for the 735. However, if you do not want to spend the extra effort and feel that you don't have the confidence or want to take this extra risk then that's fine by me, then I would recommend either the 740 or 750 depending on how available they may be by price or stock.

 

So many replys... This forum is nice!

Wouldn't be prudent...But sure would be fun!

That info about the pin-mods effects is great. Thanks. I feel silly for not thinking about that.

I'm confident that if I put the few engineering courses I have under my belt to work I can get that pin mod functioning. If not than I should give up this goal of working for NASA immediately!

I wasn't aware that the mod is less effective with the 735... I suppose that is motivation enough to stick with the 725 upgrade.

However, I found a 750 for about the same price as a 725 (just under $50). Is there a mod/overclocking technique I could use to bring up the 750's performance enough to make it significantly better than the modded 725 you described?

 

Unfortunately the 750 is not overclockable simply because the processor was designed for 133 FSB/533Mhz already, and there are no techniques to increase that further. However, the 750 would be 2.0 Ghz so the difference between the [email protected] and the 750 would be very small. The only 2 stock processors that would be equal or faster would be the Pentium M 760 and 770 which come at a much higher premium price.

 

Well, I have to disagree. Older Centrino based notebooks are still decent performing notebooks for daily tasks and office work, although my W3V is already 2 years old, I still use it everyday. For $50 upgrade to increase it's productivity life is very much worth it, more than buying something that is more of a lowend machine at $499 to be used in the same way.

 

i have a Intel® Centrino™ Mobile Technology with Intel® Pentium® M Processor 735
(2 MB L2 Cache | 1.70 GHz | 400 MHz FSB) gateway can upgrade my processor if to what and would the cost be worth it thanks

 

Wow. This was my first thread! . Risen from the dead . Aarons0913 you may want to make a new thread regarding your question. Little useful responses come from threads that were previously buried. More attention will be given to a new one I promise.

(Make a new thread by clicking the "New Thread" button in the upper left corner of the forum.)

 

In all cases you can upgrade but to what CPU will depends on your chipset (i855, i915, or something else)

What's your laptop's name?

 

What CPU did you upgrade to after all?

 

I never wound up doing the upgrade. I was finally planning to about a month ago when a catastrophic cup of water fried my LCD backlight!

So now the L25 is in a box in the corner of my office waiting for me to fix it... I'll probably still do the 735 upgrade after fixing the back light and give it to my brother or something.

 

It`s old now, but i upgraded a Celeron m420 1.6ghz to a CoreDuo t2050 1.6

 

That must have hurt

Are sure that only the backlight (i.e. the light bulb) has been damaged? and that your inverter and LCD panel are OK?

 

A user here helped my diagnose what could be the culprit . Had to pull out the multimeter and take some readings. The inverter tested ok, and the LCD is displaying with the same symptoms of a damaged backlight, so I'm assuming this to be the case.

If I go through all the work of replacing the back light I will be sad if I find the LCD itself was damaged though...

 

Well it's kind of easy to figure out if the panel is OK. If you can see Windows desktop but the image is very dim, then the panel is fine.

Regarding changing the backlight by yourself. I would say that there is a high risk to damage your LCD. I tried it once, and I'm not willing to try it again. The little presure I applied to the panel while re-assembling it has damaged something inside it. Result, I ended up with a 3-4 pixel thick horizontal white line in the middle of the screen.

 

That is exactly the symptom it has, and the reason I'm thinking back light. I'm hesitant about replacing it, as I know it takes more delicate hands than my own . But ultimately I don't have much to lose right? I'll probably wind up turning it into a DVR anyways, so a screen isn't too important. Still, I'll try my best .

 

What make you think it's not the inverter?

To my knowledge and from the info I gathered from the forum, you can't diagnosys an inverter using a voltmetre.

 

I made a thread about it actually .

http://forum.notebookreview.com/showthread.php?t=279433

I'm basing the test on what a very knowledgable user advised me to do:

 

I don't know since I tried this in few inverters and the voltmeter did not show any activity.

Any way, thanks for the link.