Thinkpads Forum

I just put it on Ebay a few minutes ago..

IBM Thinkpad Z60t LENOVO Laptop 2.26ghz 2GB WIFI B/T

HOW DO YOU OVERCLOCK A LAPTOP???

PLEASE RESPOND, INQUIRING MINDS WANT TO KNOW!!

Nice looking thinkpad, but does it come with a warranty from Lenovo. I didnt see that is the post or ebay.

scosgt1 wrote:HOW DO YOU OVERCLOCK A LAPTOP???

PLEASE RESPOND, INQUIRING MINDS WANT TO KNOW!!

He probably means that the CPU was upgraded to a Pentium M 780.

Incidentally, some laptops can be overclocked by increasing the FSB. Many Pentium M chips spec'd at 100 MHz FSB will do 133 MHz FSB just fine.

Well, I must say that upgrading a CPU within the same FSB and specs usually works (see: T2X series and fan problems), but going out of spec is a sure recipe for stability issues. And there goes the warranty. I would not do that, and I certainly would not buy such a laptop. But that's just my .02

scosgt1 wrote:but going out of spec is a sure recipe for stability issues. And there goes the warranty.

Well of course. That's most of the challenge in overclocking - doing it properly without damaging the equipment.

Overclocking usually involves changing jumpers or BIOS settings to up the clock speed on the "standard" chip - IOW, make a 500 Celeron run at a PC133 bus speed to get more speed out of the chip, but you can not do this on a ThinkPad. Since you can not increase the bus speed, I don't see the point of putting lets say a 800 FSB CPU into a 533 FSB machine. If it even works at all, it is a receipe for disaster. Everything is mis-timed, and there could be a heat problem, as the fan and cooling slots were not designed for that chip. I don't consider this a selling point.

qviri wrote:He probably means that the CPU was upgraded to a Pentium M 780.

Okay, sorry, saw cmarti's post - apparently it's a pin-modded CPU, not an upgraded stock one. I am guessing a Banias Pentium M 100*17 at 133*17?


Now to argue semantics and unrelated stuff...

scosgt1 wrote:Overclocking usually involves changing jumpers or BIOS settings to up the clock speed on the "standard" chip - IOW, make a 500 Celeron run at a PC133 bus speed to get more speed out of the chip, but you can not do this on a ThinkPad. Since you can not increase the bus speed, I don't see the point of putting lets say a 800 FSB CPU into a 533 FSB machine. If it even works at all, it is a receipe for disaster. Everything is mis-timed, and there could be a heat problem, as the fan and cooling slots were not designed for that chip. I don't consider this a selling point.

I believe that a 800 MHz FSB CPU put into a stock 533 MHz FSB machine will just run at the slower FSB.

On the other hand, (some?) notebooks can increase the FSB that a CPU is run at. In particular, on Pentium M Thinkpads one can use setfsb to up the FSB, and there are reports of such mods being successful. clockgen is another option I have found while googling.

Heat considerations always apply, but they can be kept in check if you know what you're doing. Whether it's a selling point depends on the buyer; the fact it is overclocked is disclosed for people to make their own decisions.

In particular, on Pentium M Thinkpads one can use setfsb to up the FSB, and there are reports of such mods being successful.

That's encouraging!!!!!!!

On most ThinkPads I have dealt with (and that is MANY) you can't even use faster memory, much less a faster FSB CPU. It just won't even boot. If you want to experiment, that's fine. But the better upgrade is a newer machine, when you have maxed out on the CPU.

I also am curious as to how it was over clocked. I would not go so far as to say That I would not buy such a machine.

Scott

qviri wrote:

scosgt1 wrote:HOW DO YOU OVERCLOCK A LAPTOP???

PLEASE RESPOND, INQUIRING MINDS WANT TO KNOW!!

He probably means that the CPU was upgraded to a Pentium M 780.

Incidentally, some laptops can be overclocked by increasing the FSB. Many Pentium M chips spec'd at 100 MHz FSB will do 133 MHz FSB just fine.

Nop! It called pinmod.

Pinmodding guide

And the good thing is that it works like a charm.

Okay, sorry, saw cmarti's post - apparently it's a pin-modded CPU, not an upgraded stock one. I am guessing a Banias Pentium M 100*17 at 133*17?

I used a 1.7ghz 2mb 400mhz Dothan.

And no there are no heat issues nor stablility problems, and the speedstep is there working as it should i use articsilver 5 to ensure proper cooling to the cpu.

ibmthinkpad99 wrote:Nice looking thinkpad, but does it come with a warranty from Lenovo. I didnt see that is the post or ebay.

The warranty already expired.

Sold.

IBM Z60t custom

This one can be locked.