I'm at 1.3v 1.75GHz on my 17" PowerBook. Would boosting the vCore to 1.4 or 1.45v be too much for the 130nm 7447A? According to Freescale the max volts is 1.6v. It was set by Apple to 1.25v... With 1.45v I can probably get to 1.9 or even the majixcal 2.0GHz. I don't want to fry the CPU though... The temps are under 80C, which is good for a PowerPC Mac (seriously, these PowerPCs can take 100C and be fine).
I run my CPU at 1.5
Is that a 32nm?
All I know is that my CPU (8350) can take up to around 62C and 1.55v.
I don't know if I'd try pushing it that high on such old tech. I'd worry about other parts getting knocked out at those temps (80*+) more so than the CPU itself.
umm... laptops are usually completely locked. besides, on that old shit, it's not gonna make any difference in performance.
A lock only exists to those that do not know how to crack the lock.
http://www.overclock.net/t/1445164/aluminum-powerbook-g4-overclocking
Ehhhh, with adequate cooling solution it won't. My runs at 1.5V-1.512V @ 5GHz (FX-8350) using a Kraken X60 on push-pull with 4 noctua fans. 69C as max temp over 100% usage.
when you can tell me how long a piece of string is i will tell you if your cpu can take 1.45v.................
Since you are useing a craptop...err laptop just dont..dont overclock it
69C is bad...if you keep at that temp you'll be saying goodbye to the chip very soon. To get most of the life, AMD even says not to go past 62C or else you'll deteriorate it's life and anything past 1.5V is like hell for it.
I think you're running a 32m, chip, 1.45 is probably the limit i would say. Also make sure to have some good thermal paste on that chip...it's quite hard to say since the hardware is quite a bit aged, you won't get the maximum performance but i would tone it to 1.4v @ 2Ghz and see how it runs, afterwards just do the process and see how hot it runs and how high the internal fan runs.
you would overwhelm the laptop cpu cooler, which isnt the best.
as i'm almost absolutely certain none of use have experience with overclocking ibm PowerPC cpus, none of us are qualified to speak on how much voltage can be used with them
I could tell you what ivy bridge could take and I could tell you what vishera can take, but I might as well be telling you how to bake a cake because it's about as relevant
I disagree entirely, unlike desktops, laptop clock speeds are set with power use as a very high preference. This means if your not running on battery then you can normally runs components significantly faster without major drawback. The same increase on a desktop will normally reducing life expectancy vastly more or simply crash.
In addition unlike desktops laptops are difficult\expensive to upgrade (aside from HDD and ram). This makes the improvements from a sensible overclock far more than with a desktop computer where upgrading the component in question is the best bet.
Personally I run a sizable overclock on my Asus N50Vc, mainly in the graphics card for use in video editing and gaming. After over 5 years of solid service I'm looking to upgrade, but have no symptoms of wear such as artifacts or stability issues. Personally I say go for it... but keep your voltage sensible, you should be able to push fairly well without exceeding the voltage of the desktop modal of the same CPU and GPU units.
You can actually fix that easy, examples are a cooling pad with fans (make your own for <$20) or doing what I tired when shooting a few numbers on my laptop for fun, that is over-volt the laptop fan, you'll get 20-30% extra cooling (which is a lot... that's enough to bring you back to near stock temperatures from a stock fan-speed overclock), however I wouldn't do that for too long or you may have bearing issues.
NEVER run an 8350 over 65C!!!!!!!!