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I'm getting some PowerBooks!

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rabidz7

rabidz7

macrumors 65816
Original poster
Jun 24, 2012
1,205
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Ohio
I am getting a PowerBook G4 17" 1.33GHz and a TiBook sent to me in the mail.
The TiBook has a destroyed hinge, and the PowerBook has had part of the case crushed, but other than that they work great!


Do not comment on the italic part

I will be trying to OC the 17". I know the PLL location, but not the assigned bits. I'd appreciate if someone would help me find the config in a PM. If I find the VRM, do you think could I reach 2.0GHz? If I can't find the VRM I will go for 1.67GHz.

Top Left image is the 1.33 GHz
Top Right image is the 1.5GHz
Bottom Left image is the 1.67GHz

Do not comment on the italic part
 

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rabidz7 said:
If I find the VRM, do you think could I reach 2.0GHz? If I can't find the VRM I will go for 1.67GHz.
Click to expand...

No! Christ. Thermal dissipation scales linearly with clock speed and quadratically with voltage. Most wouldn't attempt that in a desktop with modified cooling. This is a laptop. I get that you really enjoy this, even when you end up with a non-working machine, but you should really stop giving this type of advice to others. That guy in the other thread probably can't afford to buy these every week just to experiment.
 
MacXtrem overclocked 1.33GHz PowerBooks to 1.83GHz with no trouble. They also had many people in the comments reply saying that they had reached 2GHz and even 2.33GHz.
 
rabidz7 said:
MacXtrem overclocked 1.33GHz PowerBooks to 1.83GHz with no trouble. They also had many people in the comments reply saying that they had reached 2GHz and even 2.33GHz.
Click to expand...

They lied. Or were mistaken, using the firmware setting that only makes it report that it is running at that speed, but isn't actually.

And a short-term overclock isn't the same as stable long-term running. There is no way they got a 1.33 GHz G4 to run stably at 2.33 GHz for any length of time.
 
Anonymous Freak said:
They lied. Or were mistaken, using the firmware setting that only makes it report that it is running at that speed, but isn't actually.

And a short-term overclock isn't the same as stable long-term running. There is no way they got a 1.33 GHz G4 to run stably at 2.33 GHz for any length of time.
Click to expand...

What firmware setting?!
Did you even click the link?!
 
Swampus said:
No! Christ. Thermal dissipation scales linearly with clock speed and quadratically with voltage. Most wouldn't attempt that in a desktop with modified cooling. This is a laptop. I get that you really enjoy this, even when you end up with a non-working machine, but you should really stop giving this type of advice to others. That guy in the other thread probably can't afford to buy these every week just to experiment.
Click to expand...

Woah, no way should someone mess with voltages in a laptop, I've bumped my desktop's AMD 1055T (6core) from 1.15v to 1.4v, which is pretty stupid, yeah, but that was enough to shoot the load temps by 40C.
(this was only done so I could hit 4.4giggles)
No not mess with your voltages, especially in a laptop.
 
lucasfer899 said:
Woah, no way should someone mess with voltages in a laptop, I've bumped my desktop's AMD 1055T (6core) from 1.15v to 1.4v, which is pretty stupid, yeah, but that was enough to shoot the load temps by 40C.
(this was only done so I could hit 4.4giggles)
No not mess with your voltages, especially in a laptop.
Click to expand...

Personally, I love how underclocking (and undervolting) has become the new overclocking. If you've followed any of Tutor's posts in the Mac Pro section, you've seen some pretty amazing stuff with frequency and voltage tweaks creating the optimal thermal conditions for turbo boost to run for extended periods of time. Apple engineers could learn a thing or two there.
 
rabidz7 said:
What firmware setting?!
Did you even click the link?!
Click to expand...

The same firmware setting that you claim will overclock a Cube's fbus. The same firmware setting that has long been the fool's gold in overclocking. The same firmware setting that is used to trick the Leopard installer into allowing installations on slower G4s. It does nothing at all but change the reported value. There is no speed gain. Zero.
 
Intell said:
The same firmware setting that you claim will overclock a Cube's fbus. The same firmware setting that has long been the fool's gold in overclocking. The same firmware setting that is used to trick the Leopard installer into allowing installations on slower G4s. It does nothing at all but change the reported value. There is no speed gain. Zero.
Click to expand...

Why is this being brought up here?

----------

People, if you are too lazy to click the MacXtrem link, don't post your assumptions. MacXtrem did the overclocks by soldering jumpers and resistors for voltage.
 
rabidz7 said:
Why is this being brought up here?
People, if you are too lazy to click the MacXtrem link, don't post your assumptions. MacXtrem did the overclocks by soldering jumpers and resistors for voltage.
Click to expand...

You're the one that brought up the firmware in a questioning way. I replied with an answer to your question. Anonymous Freak was merely pointing out that it doesn't work in a way that is productive. Anonymous Freak happens to be a very well respected PowerPC Mac user, not only on MacRumors, but on the internet as a whole. If he says it wasn't done, it very very likely wasn't done. I, as well as others within this forum, agree with him upon this subject.
 
Intell said:
The same firmware setting that you claim will overclock a Cube's fbus. The same firmware setting that has long been the fool's gold in overclocking. The same firmware setting that is used to trick the Leopard installer into allowing installations on slower G4s. It does nothing at all but change the reported value. There is no speed gain. Zero.
Click to expand...

Why is this being brought up here?

It will overclock the fbus, if pins in the picture below are modded.
index.php
 
rabidz7 said:
Why is this being brought up here?

It will overclock the fbus, if pins in the picture below are modded.
Click to expand...

That's not the fbus, that is the video bus regulator jumpers. Messing with those will cause the Cube not to boot or kill the video card. Read more about that on CubeOwner. May I also remind you that the Cube's fbus has never actually been overclocked beyond the fake OpenFirmware speed reporting change.
 
rabidz7 said:
MacXtrem overclocked 1.33GHz PowerBooks to 1.83GHz with no trouble. They also had many people in the comments reply saying that they had reached 2GHz and even 2.33GHz.
Click to expand...

That's not very reliable. Like anyone can say they reached 2.33 Ghz just to look cool :rolleyes:

Probably brand new they could be somehow overclocked, however these machines are old, pretty old, don't think they can survived overclocking
 
rjcalifornia said:
That's not very reliable. Like anyone can say they reached 2.33 Ghz just to look cool :rolleyes:

Probably brand new they could be somehow overclocked, however these machines are old, pretty old, don't think they can survived overclocking
Click to expand...

I think the 2.33GHz was a troll, as it said that the voltage was not modified. However, the 1.83GHz overclock has pictures, benchmarks and was done by MacXtrem.

----------
Intell said:
That's not the fbus, that is the video bus regulator jumpers. Messing with those will cause the Cube not to boot or kill the video card. Read more about that on CubeOwner. May I also remind you that the Cube's fbus has never actually been overclocked beyond the fake OpenFirmware speed reporting change.
Click to expand...

Well, then I will need to know what the clock chip is so I can get a datasheet.
 
rabidz7 said:
Well, then I will need to know what the clock chip is so I can get a datasheet.
Click to expand...

Good luck finding it. Hint: It doesn't have exposed user configurable traces because of how the Cube was designed not to be upgraded over its design lifecycle. In stark contrast to many other PowerPC Macs, it was purposely limited by Apple and rather doomed to a stunted production life.
 
Every rabidz7 thread;

1. rabidz7 asks ridiculous question.
2. People answer with unfathomable patience.
3. rabidz7 gets pissy because he doesn't get the impossible spoon fed to him.

Rabidz - do your self a favour and actually just enjoy the laptops as they are & forget about sticking your mitts in places that they really shouldn't be. You may actually get somewhere that way.
 
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OK, then stop talking about the overclocking. Just talk about the PowerBooks in general.
 
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