[siegzdad]

Well, after a bit of swearing, I was able to OC my Pismo 400 to 500MHz. The solder joint looks fugly, but hey, it is at the desired speed.

Just thought I'd pat myself on the back.

[Petter]

Originally posted by siegzdad:
<STRONG>Well, after a bit of swearing, I was able to OC my Pismo 400 to 500MHz. The solder joint looks fugly, but hey, it is at the desired speed.

Just thought I'd pat myself on the back. </STRONG>

Cool!
Congrats!

have you noticed any shorter usage time yet?

[siegzdad]

As far as battery etc? Dunno, I almost never run it off battery. As far temperature, that is deffinately higher. It never got above 56C before, and now it runs at 64C max.

I have definately seen a speed increase. Just as an example, doing the dnetc client before I would get a max of 1,003,000 keys/s now I get 1,223,000. Not a bad increase in my book.

Everything is snappier, glad I did it, but I must admit that I was dismayed by how small that one stinking resistor was...

[ 02-23-2002: Message edited by: siegzdad ]

[Carl Norum]

Originally posted by siegzdad:
<STRONG>Everything is snappier, glad I did it, but I must admit that I was dismayed by how small that one stinking resistor was...</STRONG>

All it takes is perseverence.

We did several iBooks with a CDN$25 soldering iron from Radio Shack and the right attitude.

I've found that the "sweet spot" for OCing is a 5x bus multiplier. After that, the machines are basically indistinguishable. Going from 400 to 500 on a 100 bus is definitely a good plan!

I hope you enjoy your "new" machine.

[waffffffle]

I am very jealous. I really want to learn how to use a soldering iron so I could do this to my pismo. It really needs to be faster.

[[APi]TheMan]

Originally posted by waffffffle:
<STRONG>I am very jealous. I really want to learn how to use a soldering iron so I could do this to my pismo. It really needs to be faster.</STRONG>

I hear you, man. I have a Pismo 400 mhz, it runs OSX fairly well, but I think that an extra 100 mhz boost would give it just a little more edge... If anything went wrong in a soldering process I'd be devistated, as I am only 17 and I don't have the kinda of money to a new laptop. Sheesh.

[[APi]TheMan]

Originally posted by [APi]TheMan:
<STRONG>

I hear you, man. I have a Pismo 400 mhz, it runs OSX fairly well, but I think that an extra 100 mhz boost would give it just a little more edge... If anything went wrong in a soldering process I'd be devastated, as I am only 17 and I don't have the kinda of money to a new laptop. Sheesh.</STRONG>

[Macfreak7]

Originally posted by siegzdad:
<STRONG>Well, after a bit of swearing, I was able to OC my Pismo 400 to 500MHz. The solder joint looks fugly, but hey, it is at the desired speed.

Just thought I'd pat myself on the back. </STRONG>

have you noticed any problems/freezes since?

if not, wanna tell us how you did it, exactly?
thanks

[x user]

Nice

I agree those resistors are far too small.

[siegzdad]

Originally posted by Macfreak7:
<STRONG>

have you noticed any problems/freezes since?

if not, wanna tell us how you did it, exactly?
thanks</STRONG>

I have had the machine running pretty much for the last 24 hours (just did it yesterday) without the slightest hickup. I have been positively pounding the processor throughout that time to see if it is going to be unstable, and this morning it seems to be fine.

I found the instructions at http://translate.google.com/translate?hl=en&sl=fr&u =http://maclover.free.fr/&prev=/search%3Fq%3DPismo%2BOverclock%26hl%3Den (If you speak french, go to http://maclover.free.fr/&amp;prev=/searc...lock%26hl%3Den )The page was originally in French, and I used google translator to put it into (bad) engligh. It was enough to figure out what was going on.

Here is the down and dirty of how to do it. Pics can be found at the above site.

1) run a temperature test to see how hot the PB gets. Basically pound the processor (run dnetc, or watch a DVD for two hours, etc) and run the utility Guage Pro and run it under 9 (or use Cache Control from Powerlogix in X) to get the internal temp of the CPU. If it is above 60C don't bother. Mine was at a max of about 54C so I decided to go ahead and do it.

2) Pull the CPU Card from the Pismo (just like if you were going to install memory on the lower slot). You will need a Torex #8 screw driver.

3) Turn the card over and remove any memory from the bottom slot. Locate Resistor R130 and R127. A 400MHz processor has the resistor on R130. That needs to get moved to R127.

4) Use a FINE tipped soldering iron to remove the resistor and move it over to R127 and solder it back in place. Be patient, this took me almost 20 minutes to do (and I have done a LOT of soldering before).

5) Put the sodimm(s) back in, replace the processor card and see if it boots. If it does run the Apple System Profiler or Cache Control X to make sure it is running at 500MHz. If it does, congrats, you're done. If it doesn't pull the card and check your soldering joints. And most of all, DON'T PANIC. I was lucky, I got it on the first try. But there were moments when I felt awful, like when I dropped the resistor off the card onto my table. The sucker is SMALL -- it looked like a tiny crumb on my table. But I found it and was able to get it in place.

6) Run your temp test of choice and see what you are getting. I seem to be maxed out at 64C and it is running smooth. I don't know what the max is these processors can handle...

If you decide to do this to your book, good luck, be patient, and most of all, don't panic. Also, I won't be held responsible if you decide to do this hack, and mess it up. (My lawyer made me put that in)


edit: now if I could just find the resistor to move that would fix my typos...

[ 02-24-2002: Message edited by: siegzdad ]

[COmie JOe]

Originally posted by siegzdad:
<STRONG>

I have had the machine running pretty much for the last 24 hours (just did it yesterday) without the slightest hickup. I have been positively pounding the processor throughout that time to see if it is going to be unstable, and this morning it seems to be fine.

I found the instructions at http://translate.google.com/translat...lock%26hl%3Den (If you speak french, go to http://maclover.free.fr/&amp;prev=/searc...lock%26hl%3Den )The page was originally in French, and I used google translator to put it into (bad) engligh. It was enough to figure out what was going on.

Here is the down and dirty of how to do it. Pics can be found at the above site.

1) run a temperature test to see how hot the PB gets. Basically pound the processor (run dnetc, or watch a DVD for two hours, etc) and run the utility Guage Pro and run it under 9 (or use Cache Control from Powerlogix in X) to get the internal temp of the CPU. If it is above 60C don't bother. Mine was at a max of about 54C so I decided to go ahead and do it.

2) Pull the CPU Card from the Pismo (just like if you were going to install memory on the lower slot). You will need a Torex #8 screw driver.

3) Turn the card over and remove any memory from the bottom slot. Locate Resistor R130 and R127. A 400MHz processor has the resistor on R130. That needs to get moved to R127.

4) Use a FINE tipped soldering iron to remove the resistor and move it over to R127 and solder it back in place. Be patient, this took me almost 20 minutes to do (and I have done a LOT of soldering before).

5) Put the sodimm(s) back in, replace the processor card and see if it boots. If it does run the Apple System Profiler or Cache Control X to make sure it is running at 500MHz. If it does, congrats, you're done. If it doesn't pull the card and check your soldering joints. And most of all, DON'T PANIC. I was lucky, I got it on the first try. But there were moments when I felt awful, like when I dropped the resistor off the card onto my table. The sucker is SMALL -- it looked like a tiny crumb on my table. But I found it and was able to get it in place.

6) Run your temp test of choice and see what you are getting. I seem to be maxed out at 64C and it is running smooth. I don't know what the max is these processors can handle...

If you decide to do this to your book, good luck, be patient, and most of all, don't panic. Also, I won't be held responsible if you decide to do this hack, and mess it up. (My lawyer made me put that in)


edit: now if I could just find the resistor to move that would fix my typos...

[ 02-24-2002: Message edited by: siegzdad ]</STRONG>

DON'T REMOVE the twoTorex #8 screws
They hold of the thermal pad the processor. all you need to remove is the philips that is on heatsink (the strange metal thing that is near the fan.

[siegzdad]

You do need to remove two torex screws that hold the metal plate that sits over the processor/memory compartment, but you are right, you do not need to remove the heat pad.