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Am doing CPU upgrade on M35X-S111

post #1 of 18
Thread Starter 
I've got all the dissassembly instructions and pictures and a syringe of Artic Silver 5 and a Pentium-M 1.7 GHz Dothan core processor. I had originally purchased a high capacity battery for $140 from Toshiba but my daughter lifted it for her S149 and left me with her dinky 4 cell battery. Will I be able to get better battery life from the Pentium-M? Will it function in the speed step modes that a real Pentium-M notebook will?

Anything I need to watch out for or do besides just replacing the processor? I've already upgraded the RAM to 1Gb and installed a 5400 RPM HDD.
post #2 of 18
Let me know how the cpu upgrade goes. I might atttempt this in the future. Am curious how significant the improvement will be. Was there a significant difference noticed when you installed the 5400 rpm hdd? I have a M35X-S149 as well.
post #3 of 18
Thread Starter 

How much faster with a 5400?

It benchmarked with SiSoft Sandra about 25% faster. The nice thing about the 5400 rPM is that is doesn't hit you with high power drain like a 7200 will. 5400 doesn't draw any more than a 4200 RPM.. I used a Toshiba Travelstar drive as my replacement. I can send you the benmark results for several Toshibas if you'd like. I benchmark every laptop I can get my hands on just out of curiosity.. It's an Excel file. Just let me know and I'll PM it to you. it's kind of interesting...
post #4 of 18
Thread Starter 

Exact figures for file system benchmark

4200 RPM Toshiba M35X-S161 Celeron M 1.4 GHz benches at 24901
5400 RPM Toshiba M35X-S111 Celeron M 1.5 GHz benches at 31976
post #5 of 18
Thread Starter 

By the way...

And the info that I gathered on benchmarks only put the 7200 RPM about 7% faster than the 5400. So the best bang for the buck is the 5400. And those 7200 RPM 2 1/2 drives are a LOT more expensive.
post #6 of 18

M35X S111 Upgrade

Four+ questions, if I may:
1) I never saw any posts following up on the CPU replacement. How did it go or hasn't it yet?
2) Where did you get the disassembly instructions? I've been combing the web/ebay/everywhere trying to get a handle on the service manual or disassembly instructions for this notebook; no I'm not a licensed Toshiba repair technician. No luck so far.
3) If you have taken the unit apart, did you notice whether this unit has in fact got an internal mini-PCI slot; I believe not, but was just curious. Some of the similar low-end models do, but I've heard that this one was left off; board has a place for it but no slot is mounted.
4) Processor type limitations? I see that you specifically chose Dothan. Did you manually search for the chipset compatability, or did you find an all inclusive chart? Do you happen to know the clock/multiplier limitation of this motherboard/bios/chipset.

Good luck on your conversion project.
Thanks in advance for any info that you can provide.
post #7 of 18
Flollow the link in the first post of THIS thread. That has the dissasembly instructions for the M35x series.
post #8 of 18
Thread Starter 

Upgrade is completed

As to the answers to your questions:

A million pardons... I posted all the upgrade details in the other Toshiba Forum under... Notebookforums > Toshiba instead of continuing with this thread. I'll move the stuff over here instead. Hopefully the Forum Police won't chastise me too soundly...

The dissassembly instructions are at:
http://www.irisvista.com/tech/laptop.../satM35X_1.htm

No real problems... But as long as it was open. I cleaned the fan/radiator, which was pretty clean anyway. I also cleaned off the old thermal paste from the CPU heatsink and the graphics chip? and replaced it with a dab of Arctic Silver 5. Oh, there is one catch in the instructions... minor but so you don't repeat the same mistake. In the first part it says to remove all the screws from the BOTTOM of the laptop. Well there are 2 screws on the back edge of the computer.. not techincally the bottom.. I took them out along with the others but I didn't need to... later in the instructions they tell you to take them out. They actually hold the LCD screen on. Other than that.. the ribbom cable to the keyboard is a pain to get back in it's little slot. Just be careful but make sure you DO get it all the way back in.

Nope, no mini PCI slot. There is a pad for the wireless card also on the MOBO but there is no actual slot attached to the pad. So no chance of puttting in an internal wireless card... I don't know how you'd turn it on anyway, since there is no switch like there is on the ones with built in wireless.

Here's how i determined which CPU to use... price vs. performance. From what I gleaned from Notebook Forums if you have a particular model of notebook, like M-35X, you can use any CPU that was used in that particular model line since the chipsets are the same. If the chipsets were different it would be a different story. So... it just checked out all the models in the M-35X line and found that the fastest processor they used in that line was like a 1.8 GHz Pentium M. Well the difference in performance between a 1.7 GHz and a 1.8 is very small and I didn't even see one on FleaBay. Lots of 1.7s but no 1.8s. I paid $138 including shipping for a new 1.7 GHz chip. Don't know what a 1.8 would have cost but I'd guess significantly more.

So there you have it... as to the other info.. I'll just poke it in below for your perusal...

Well I finally got around to my threatened CPU swap. Went pretty well actually with the dissassembly instructions I had. Couple of head scratching moments but nothing insurmountable. The keyboard ribbon cable was a pain to get reattached... I've now done just about everything I can do to this thing to make is run better. I've installed 1Gb of RAM, upgraded the HDD to a 5400 RPM unit and now upgraded the CPU from a 1.5 GHz Celeron M to a 1.7 GHz Pentium M. Here are the before and after benchmarks for the CPU upgrade using various benchmarks:

3D Mark 2001SE Results are 2288 with 1 Gb of RAM 1.5 GHz Celeron M
3D Mark 2001SE Results are 2474 with 1 Gb of RAM 1.7 GHz Pentium M
an 8.1% Increase. Basically didn't do much for it's impressive graphics capability.

PC Mark 04 Results are 2423 with 1 Gb of RAM 1.5 GHz Celeron M
PC Mark 04 Results are 2814 with 1 Gb of RAM 1.7 GHz Pentium M
a 16.1 % Increase. This turned out to be almost what I expected. I was hoping to get 15 to 20%. So I'm happy.

And just for fun I also ran the PC Mark 05 benchmark suite and it came in at1556 with 1 Gb of RAM 1.7 GHz Pentium M. I didn't have the result of this test from the old CPU setup.

No real surprises in any of this. Just for info here are the benchmark results for all the notebooks and desktops in my family for comparison. All the results are from SiSoft Sandra Combined Performance benchmark. About the only thing that surprised me was the drop in the File System Benchmark which makes no sense. Though I did get an error saying my hard drive was too fragmented to do the test so I defraged it and ran it again. Don't think it worked very well. It probably didn't actually chage at all. I can't tell any difference. I'd just assume it is the same as the test I ran before I did the CPU upgrade...

CPU Arithmetic Benchmark

Stock Presario 700 1GHz Duron 5565
Toshiba S161 Celeron 1.4 GHz 7388
IBM Notebook P4 1.8 GHz 7635
Toshiba S111 Celeron 1.5 GHz 9065
Toshiba S111 Pentium 1.7 GHz 10301

CPU Multi-Media Benchmark

Stock Presario 700 1GHz Duron 18999
Toshiba S161 Celeron 1.4 GHz 25941
IBM Notebook P4 1.8 GHz 30639
Toshiba S111 Celeron 1.5 GHz 29881
Toshiba S111 Pentium 1.7 GHz 34054

Memory Bandwidth Benchmark

Stock Presario 700 1GHz Duron 1189
Toshiba S161 Celeron 1.4 GHz 4289
IBM Notebook P4 1.8 GHz 3558
Toshiba S111 Celeron 1.5 GHz 4183
Toshiba S111 Pentium 1.7 GHz 4363

File System Benchmark

Stock Presario 700 1GHz Duron 13162
Toshiba S161 Celeron 1.4 GHz 24901
IBM Notebook P4 1.8 GHz 21804
Toshiba S111 Celeron 1.5 GHz 31976
Toshiba S111 Pentium 1.7 GHz 22855

There was one thing I was wondering about with the CPU upgrade and that is bus speed.

My stock M35X-S111 says it's a Celeron M running at 1.5 GHz with a bus speed of 333 MHz.

After the CPU swap it automatically changed the CPU speed to match the Pentium M 1.7 GHz Dothan that I installed. At the time I wondered if the bus speed would remain at the 333 MHz setting. From what I understood about doing this is that I expected the CPU setting to change but didn't think the bus speed would change. From what I can tell it also changed the bus speed to 400 MHz to match what the new CPU is capable of... OR are these programs like CPUZ just reading what the CPU says? Do you think it really did alter the bus speed as well. I was under the impression it wouldn't... is there any definitive way to determine this?

That's all I have. If you need any more info just drop me a line.
post #9 of 18
Thread Starter 

Couple more things...

There are a couple of more advantages to this upgrade... You get the advantage of speed stepping which is supposed to improve battery life since it can step down the CPU speed where the Celeron can't.

You can use all the neat little software tweaks that let you tweak the processor... particularly undervolting. Im using Notebook Hardware Control 1.9 Beta 03 to undervolt the CPU. I'm still running at 1.7 GHz but the voltage is set to 1.020 volts and guess what? At these settings the fan seldom ever comes on if you just do mundane stuff like surfing the net or word processing. If just idling... i.e. not being used, it never comes on. Makes for a very quiet notebook.

Still don't know about how much battery life improvement there is, but I left it on idle one day and it lasted nearly 4 hours just sitting there and I know my old setup wouldn't last nearly that long with these cheesy 4 cell batteries that come with these notebooks. We'll see.
post #10 of 18
Thread Starter 

Oops, one more thing

Coolest of all.... when you boot up, the Intel logo that pops up reports a Pentium M processor logo, rather than a Celeron M logo.
post #11 of 18
Thread Starter 

Forgot to answer your last question

Bus/Core Ratio is 17
post #12 of 18
Quote:
Originally Posted by schleeb
A million pardons... I posted all the upgrade details in the other Toshiba Forum under... Notebookforums > Toshiba instead of continuing with this thread. I'll move the stuff over here instead. Hopefully the Forum Police won't chastise me too soundly...
Don't worry about it. We're small enough and seemingly civilized enough that we apparently go almost un-moderated most of the time.

Other than that looks like a good job. I'm considering something like this down the line once I get my tecra m2v. I want to swap the 1.5GHz w/ 1mb for a 2.0 w/ 2mb, but that's quite a bit down the way since I'm poor again. I'm also considering trying to throw a 1ghz p3 into my old tecra 8100, but again, I need to come into more $ first (even though it's only like $30-40).
post #13 of 18
hey - i know this post was from 2 years ago, but i'm currently doing this exact same upgrade on my m35x-s111, and your posts have been extremely helpful! Especially the benchmarking information.
For an average of 15% increase I dont know if its worth it, although prices for the 1.7ghz pentium m have dropped down to about 40 on ebay. The 1.8ghz is still around 80 or 90. Anyway, thanks for putting up all this info.
post #14 of 18
Yes, I know this is old. But so is the M35X. Hopefully some of you still have one and are willing to tweak it a bit now.

I plan on reviving this thread and possibly allowing others to further tweak/mod their Toshiba Satellite M35X-S111. I plan to be upgrading the processor as done by schleeb, but also install a mini usb hub and making wifi and bluetooth internal via usb, and installing a permanent flash drive to hold a windows xp installation and all the necessary drivers needed. I plan to take pictures and document the project as much as possible.

I am hoping to give other people the opportunity to bring new life to an old laptop, or create a multitasking beast for a college student or road warrior.

So far, unwritten draft plans in my head call to install the wireless devices in the monitor for best coverage.

I have ordered the Pentium M 735 @ 1.7GHz.

I have already installed an internal USB WiFi solution over a year ago. (currently in empty space of palm rest.)

I already own the extended battery.

I am ready to swap in a 100GB 5400rpm HD.

I already changed to a DVD-R/W Drive.

I already installed 2GB ram.

UPDATE!

I will be checking on my power connector to see if there is any re soldering necessary.

Expect lots of pics when this is done.
post #15 of 18
Quote:
Originally Posted by NerdPope View Post
...Expect lots of pics when this is done.


cheers ...
post #16 of 18
Well, all the soldering and reinforcing the adapter plug killed some of the joints to the power control chip (Maxim MAX1978). So I lost the ability to turn her on without AC power. As of right now, I've gone through 2 other boards and I have finally gotten one that works. This time I got one through ebay with a minPCI slot. Added a Intel PRO wireless card and 2 wireless antennas and you know what? The damn thing boots up with the Centrino logo now!

Yup folks, the Pentium chip works just fine.

Also, there was no wireless switch on my system and the Intel PRO wireless utility kept saying that the hardware switch was off and I needed to turn it on.

Had to look up where it was on stock M35x models to narrow down the location to begin looking. Found it to be the volume control/mic jack board next to the right speaker. On it are 4 solder traces that go to the missing factory wireless switch board. If you solder 'pin' 1 & 3 together with a small jumper wire it will act as switch on!

So here I am, finally back and completely working. I'll post the original surgery pics that killed the original board in the first place. I am typing this from my awesomely upgraded Toshiba M35X!
post #17 of 18
Hey guys,

Well you guys seem to be my kind of thinkers. With that said; I have done so much modifying on my M35X-S161 that I thought was only exceptional to me... but after finding this thread I figured out that a lot of us have had similar problems and have stuck with the m35x model over the years through thick and thin and are even juicing them up! I'm happy to see such ingenuity. Now to come to the question I have. I believe my S161 has a cleron 1.3Mhx processor and was wondering what processor has been the most successful upgrade and what has been the strongest processor used to upgrade.
post #18 of 18
Quote:
Originally Posted by tosheba View Post
Hey guys,

Well you guys seem to be my kind of thinkers. With that said; I have done so much modifying on my M35X-S161 that I thought was only exceptional to me... but after finding this thread I figured out that a lot of us have had similar problems and have stuck with the m35x model over the years through thick and thin and are even juicing them up! I'm happy to see such ingenuity. Now to come to the question I have. I believe my S161 has a cleron 1.3Mhx processor and was wondering what processor has been the most successful upgrade and what has been the strongest processor used to upgrade.
The fastest I have put into one of these units was a 1.8 centrino. I do not see why a 2ghz centrino would not work
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