T42 overclock

[Oscar]

Hi guys, I'm newbie here, this is my first post.

The clock generator in T42's is the Cypress CY-283462 chip.
I found a software overclock possibility at http://www.cpuid.com.
And it works!
Download this:

http://anixx.uw.hu/cg-cy28346.zip

Simply unpack, and run the exe.
First "Get Values", then adjust the FSB knob, and "Set Values".
Don't try too much! My Dothan 2.0GHz works flawlessly at 2240MHz.
Be careful, when You rise the FSB, you rise the PCI, and AGP clock too.
And the memory clock, perhaps.
Try it at your own risk!
Good luck, overclockers
If the setting is too much, all freezes, you need to push the power button to switch out.

[stgreek]

I might be wrong, but someone posting for the first time claiming that a dodgy-sounding file from a Hungarian site is going to overclock my PC sounds like a spammer....

[Oscar]

OK.
Download the file from an other source.

http://www.cpuid.com/download/CG-CY28346.zip

You're not too polite...

[RS_003]

He he, I wonder if i could overlock my X40 to

That would be cool. And overclocked low voltage cpu

1.2 @ 1.5ghz or something like that

But i think it wil wreck my laptop, because it does not have mem / pci / agp dividers.

Manual downlclocking instead should work.

[SimonCC]

hmm....overclocking my tp?? Sounds way to dodgy, what about heat issues?? Also as it is usually safe to only increase the fsb by .2 ghz i would never notice that differance, but each to his own i guess!

[Steve007]

overclock

What's the point?

[Skywing]

yea i dont see the point in overclocking my TP, all it will do is increase heat output and possibly damage the hardware. besdies, the PM735 is PLENTY fast, i dont think Office needs the extra MHz

[montclair1]

Yeah, isn't overclocking an IBM thinkpad kinda silly? What would be the reason? To accelerate MS Word? I doubt there are too many people playing Doom 3 on their thinkpads.

[Oscar]

If ain't broken, ain't fix it.
Overclock is not necessary.
But if you rip some dvd-s, some mp3-s, more speed is more power.
On the other hand: you can also _downclock_ the processor.
For example instead 100MHz to 88Mhz. It means more battery time.

[Leon]

Over-clocking has been around since the dawn of CPUs. The decision to do it or not has always had potential benefits, tradeoffs, and risks. However, software based over-clocking is safer than hardware based. I agree with most, that I probably do nor have a need for it on my T42.

Nonetheless, I thank our new member Oscar for pointing out this previously undiscovered possibility, and welcome him to our forum.

[dr.b]

Yeah, isn't overclocking an IBM thinkpad kinda silly? What would be the reason? To accelerate MS Word? I doubt there are too many people playing Doom 3 on their thinkpads.

I agree that overclocking a thinkpad with small coolers is silly..? ..hm say not nessasary.
But more and more i read word as the most used app on a thinkpad. It would be really silly to buy a notebook with dothan cpu and opengl to use word...

[Oscar]

Many thanks, Leon!

[gengar]

As long as there aren't voltage increases, the temperature jump from a soft overclock won't be that huge. Instability is always a risk, however, and I don't like overclocking if the PCI/AGP aren't locked.

A 240Mhz jump in CPU speed does make a very substantial difference in the mobiles. It's equivalent to a much bigger jump in desktop P4s.

[Oscar]

The rig is absolutely stable. And the plus 240MHz means a lot of bucks, take a look the 2.1GHz Dothan prize.
Last but not least: 12% is not bad, try it. Coding/encoding, etc.

[Champ]

I wouldn't persoanlly do it. Your shortening the life/increasing risk... I'd rather pay $200 for a faster proc then gambe a $4000 thinkpad

[UCI2CI]

i would have probably done it a few months ago when i was on Doom 3's nuts, but not now. i can run Tyrian 2000 just fine. But the good thing about this app is that you can use it when your playing something like Doom 3, and after your done, go back to your original speed for using MS Word. You dont always have to have it overclocked.

[Kantana]

It doesn't work on either T42P or T40, anyone know whether these use different clock generators? Could someone advise on which clock generators are used by the T42P and the T40? Much appreciated.

[Oscar]

UCI2CI: you're right. If you need the more speed, you can overclock, then adjust back. And in battery saving mode you can adjust the cpu clock back to 80MHz, it means 480MHz instead of 600MHz. That means more 23 minutes to use.

Kantana: my TP is a 2373-JXG, a pure T42, not T42/p. I don't know, which clockgen is used in the other models. The chip is under the mini-pci wireless card's left side.

Here: http://anixx.uw.hu/tp.jpg

[Kantana]

OK just took a look at my T42p and the only chip that looks remotely alike has the markings below:

ICS UJ460326
0418
950810PG

Does this mean that is is a CG-ICS950810?

If so I can't find a suitable clock gen for this chip!

Anyone have any ideas how to overclock this?

[Oscar]

These PLL do not have a System Management Bus connection or the FSB could not be set via System Management Bus. So there is and will be no program that supports these PLL's!!! There is absolutely no chance!

Too bad.

[nrj45]

Hello,
in the same goal : instead of over/downclock, what about just lower the vcore as far as the system stay stable ? So u keep the factory performance and increase the autonomy (just keep the vcore high enough to guarantee the stability).
I'm quite a newbee in this topic so please excuse me if my post is a non-sense...

[underclocker]

That would be interesting. Underclocking is very useful, especially with laptops. Unless you need the processing power, you wouldn't see any performance difference with underclocking a little, but your battery life would be prolonged.

Very useful while on the road. Also, increases the life of components. Although, they'll be obsolete before they die their natural death. (Many TP 700 series still work fine w/o being underclocked )

I'd do it on my T40 if I could.

[FTC]

I'd do it on my T40 if I could.

Well, you CAN do it. Just use the free RMCLOCK utility :
http://cpu.rightmark.org/products/rmclock.shtml
.. i'm using this in my T40 since 2 months ago. I've lowered the LOAD and IDLE voltages so that I get more battery life while on the road, and lowered temps at full load.

Btw, another useful program with this systems is the RMMA utility :
http://cpu.rightmark.org/products/rmma.shtml
... which allows you to tweak your memory timings. I am also running CAS2 my CAS3 memory thanks to it.

And for last, if you want to attempt overclocking, there is always the SETFSB proggie :
http://www13.plala.or.jp/setfsb/
Note that the X31 module works OK in T40s also.


Of course, all this programs are quite dangerous unless you know what you are doing and how to test for stability, so if you plan on attempting this, and are unsure, READ about it until you are confident, and please... be very cautious.

[Batuta]

...

[FTC]

Now I could be mistakenhere, but as far as "automatic CPU downclocking" is concerned, isn't that what IBM's own "Speed Step" technology is all about?!

Hi, you are right, but we are talking also about 'automatic CPU downvolting'. Let me explain :
The default speedstep setting will run the processor at full speed in my case at 1.5Ghz/1.484v and when idle at 600Mhz/0.956volts.

Now with the undervolt utility I can run at 1.42volts load, and 0.784volts idle with full stability. This helps a lot lowering temps (about 7º C) and making battery last longer.

This done, then I was able to overclock the machine (1.5Ghz->1.7Ghz) without effectively heating it more than in the beginning. So I started with 80ºC full load at 1.5Ghz and am now running 77ºC full load at 1.7Ghz...

Don't forget the MOBMETER utility to check all this temps and frequencies :
http://translate.google.com/translate?h ... bmeter%26h

Regards

[nrj45]

I just tried the RightMark CPU clock utility on my acer travelmate (dothan 1.5GHz). The idle settings were 600MHz@0.988Vcore. I put the minimal vcore allowed by the program : 0.700V. The system seemed stable so i increased progressively the multiplicator until reaching 1000MHz@0.700Vcore. At this point, the system crashed. So i retried with 900 MHz. The system stayed stable for a while and suddenly :blue screen. So i reretried with 800MHz and stressed a bit the cpu by playing, ad-aware scanning.

Summary : with RM CPU clock utility i have decreased the vcore of 288mV and increased the frequency of 200 MHz. By using the mobilemeter, i could mesure a difference of 2 watts.

Be sure that as soon i receive my thinkpad i will use these wonderful software (nothing to loose, everything to win)

[fbrdphreak]

For a little more organized instructions on overclocking/underclocking, check out our articles:

Basic Battery Optimization Guide

Advanced Battery Optimization Guide

Laptop Overclocking

[beeblebrox]

Just a hint from the engineer's view on overclocking.

Systems are designed according to Intel specification in terms of power dissipation and max. core temperature.

If the T40-T42 is specified to a certain max. power dissipation, e.g. 25 Watts for CPU, you can put in any Pentium you like, from 1.3Ghz up to 2.5Ghz (when they will be available).

The max. rating on the frequency is irrelevant, because every few months there is a design shrink. So, a brand new Pentium 2Ghz can certainly have less power dissipation than a first generation 1.3 Ghz.
Just check the Intel literature on the processors. You can use Sandra tool to read out the actual processor and compare with Intel spec.
Ever wondered how T40 series have the same motherboard with ever increasing CPU clock?

Further, the actual CPU rating is not necessarily the specified rating. If Intel got a customer order for 500.000 Pentiums at 1.6 Ghz and during delivery they improve their manufacturing process (as always is) they are stuck with a large batch of e.g. 1.8Ghz processors and nevertheless sell them as 1.6Ghz due to contracts. It depends on the lifetime cycle of your pentium, you can very well have a perfect 1.8Ghz chip rebranded as a 1.6Ghz.
So, technically there is no reason to worry. Just keep the system stable and monitor the heat dissipation. 200-300Mhz higher will have little effect on heat.
It is not a Pentium IV or Prescott, which then would start to turn into lava.

[fbrdphreak]

Very good points.
Also, if you look at the TDP ratings on the Pentium M's, the TDP is the same for all Dothan CPU's above 1.4GHz. There shouldn't be much more heat generated OCed or at stock speed, like beeblebrox said as long as its within 200-300MHz

[Oscar]

Sorry to be late.
The working link for the clockgen utility
http://www.cpuid.org/cg.php?cgid=CY28346