Mac Hardware forum

General discussion


by Rob3000 / February 25, 2005 1:39 PM PST

What is that? Does it improve performance? And is it okay for your computer? Someone mentioned the mac mini can be overclocked to 1.58 ghz. I'm wondering how can I do that if it's safe.

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by mrmacfixit Forum moderator / February 25, 2005 10:24 PM PST
In reply to: Overclocking?

Hi, i see from another of your posts that you have just moved over from the dark side. Welcome.
I assume you have a Mac Mini and are feeling the need for speed and have plenty of money to spend.
It is certainly possible to increase the speed of the Mac Mini up to 1.58Ghz but 1.42Ghz seems to be the more stable speed.
Usually, to increase the speed of a processor (overclock) you increase the amount of power it receives. For example, if the processor is receiving 3.0V and running at 1.0Ghz, theoretically the same processor receiving 3.5V would run much faster. Note the use of the word theoretically. Processor manufacturers certify their chips to run at a certain speed. Some processors on the same wafer will happily run at 1.5Ghz, some at 1.4Ghz, some at 1.25Ghz and some, not at all.
So if your chip has been certified to run at 1.25Ghz and you increase the voltage in an effort to increase the speed, it "might" work or it might "burn up". Usually the processor becomes unstable after a certain speed. So you start from the bottom and work up.
Remember, whichever way you go, once you start messing with the resistors that control the voltage, the machine belongs to YOU. The warranty is VOID, totally. If you ever have ANY problem with your machine, you are on your own.
Is it ok for your computer? If you have lots of money and are confident in your soldering abilities, maybe.
Does it improve performance? If it works, yes, if it doesn't, and there is no guarantee that it will, NO. you just got yourself a $500 paperweight.
So, having said all of the above, here is a link that will explain exactly how to turn your machine into the aforementioned $500 paperweight.

I would be interested in how you get on with the modifications


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The dark side
by Rob3000 / February 26, 2005 1:57 AM PST
In reply to: Overclocking

Glad to be out of it. I actually bought an Imac G5, but I thought if the mini can be overclocked so could the Imac, but I'll steer clear, I don't want to mess with a good thing. Thanks for the info, cheers.

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Is it worth the gain
by GBTrevor / March 4, 2005 12:08 AM PST
In reply to: The dark side

Personally I have not seen a PC or Mac that has been overclocked whereby the performance gain was worth the risk, especially if voiding the warranty.
Managing the operating system and applications running on start up to keep the computer fine tuned will usually give the user a good performance without the hassle of overclocking.
But then there are those who want to squeeze every little bit of speed out of a computer...gain or no gain, just to brag!

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