Thinkpads Forum

Has anyone managed to overclock their Thinkpad 240?

I was given a neglected 240 a while back, and I use it a lot. I've cleaned it up, upgraded the RAM, put on WinXP (which runs superbly), soon to buy a battery that lasts more than 5 mins...

I remember that ppl used to buy 300MHz Celerons because of their phenomenal overclockability - they're capable of (comfortably) operating at 400 MHz - and even 450 MHz. I love the size of my 240, and the potential to get an extra 33-50% CPU performance out of it is too good to ignore - especially if it's free.

CPU-Z confusingly calls the CPU a Mobile Pentium II rather than a Celeron (the elusive Dixon core, apparently):

http://img511.imageshack.us/img511/7053/cpuz2nu.jpg

...but regardless of what the hell it actually is, it seems that a guy in Japan might have managed to do the deed a while back (I can't tell from the translation).

http://translate.google.com/translate?u ... uage_tools

The multiplier, FSB clock and CPU voltage are locked on the motherboard AFAIK, and there doesn't seem to be an easier way to do this, short of installing a 240X mobo or something, which makes the method posted above seem pretty logical.

Has anyone tried this Japanese dude's method?

Anyone who can shed more light on the original Japanese text?

Anyone know if this would cause problems with other things (BIOS, for example)?

Any 240 users interested in squeezing a bit more juice from their old notebooks?

Sorry for all the questions - just seems like a fantastic prospect if it's as easy as it looks on the site I posted above.

You'd probably have better luck in the "Legacy" forum than here.

However, I used to do a LOT of Celeron-300A overclocks to 450 back in the day. Almost always successfull. However generally I was doing this on desktop PC, using PC-100 RAM and bumped the core voltage a bit. I am tempted to try this mod but the part of the page about bumping core voltage is very poor translation can't figure it out.