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Hardware Hacking Businesses Apple

DIY Mac mini Overclocking 477

mirko writes "So, you wanted a 1,42GHz Mac mini but either because of some distribution woes or because of your tight budget you could just get a 1,25GHz ? Don't worry : Leo Bodnar just found out how to overclock your machine. Of course, you'll have to open it prior to anything else but you already know how to do this."
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DIY Mac mini Overclocking

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  • Cooling? (Score:2, Insightful)

    I can't imagine that little box is all that great at cooling. I know the cube wasn't.
    I wonder if there is going to be a surplus of dead mac minis hitting ebay soon. :)
    • Re:Cooling? (Score:5, Informative)

      by William_Lee ( 834197 ) on Thursday February 03, 2005 @11:11AM (#11562172)
      Well, if you're just moving up the speed from 1.25 to 1.42, cooling shouldn't be an issue since they are shipping minis at the higher speed in the upgraded one.

      I would bet the chips are the same core in both, but the default 1.42 chips are certified qualitywise to run at that speed. Overclocking the 1.25 chip to 1.42 should really be no big deal.
      • Re:Cooling? (Score:2, Interesting)

        Sure, those are the odds.

        But the chances go up there are going to be more failures now.

        Especially if the 1.25 chips really didn't certify at 1.42. Some times, 170MHz makes all the difference. Especially if they are doing it to up thier distributed.net [distribued.net] speeds. :)
    • Re:Cooling? (Score:5, Interesting)

      by kuwan ( 443684 ) on Thursday February 03, 2005 @11:26AM (#11562326) Homepage
      Actually the Cube has proven to be pretty good at cooling judging by the number of processor, [macsales.com] video [xlr8yourmac.com] and hard drive/CD/DVD [macsales.com] upgrades for it.

      You can get up to a 1.7 GHz G4 processor upgrade and there was even a Dual 800 MHz G4 upgrade offered at one point. Some people have been able to put in nVidia GeForce 3 and ATI Radeon 8500, 9000 Pro and 9200 graphics cards in these things. Not to mention you can put a full-size hard drive into it.

      The Cube will probably end up being a lot more upgradable than the Mini, but the Mini sure has a better price.

      --
      Join the Pyramid - Free Mini Mac [freeminimacs.com] | Free Flat Screens [freeflatscreens.com]
    • Re:Cooling? (Score:5, Informative)

      by garcia ( 6573 ) * on Thursday February 03, 2005 @11:26AM (#11562327)
      Well I would assume that the 1.25 is made the same as the 1.42. I have the 1.42 myself and it runs quite cool while being extremely quiet (as long as you aren't reading a CD/DVD).

      If you bump the 1.25 to 1.42 I'm sure it's fine. I wouldn't want to bump the 1.42 any higher as it's not worth voiding the warranty for the TINY speed increase and the possibilty of the case not being able to handle the increased heat.
    • Re:Cooling? (Score:5, Informative)

      by jest3r ( 458429 ) on Thursday February 03, 2005 @11:32AM (#11562409)
      I just got a mini yesterday and it runs very cool . compared to a Powerbook. The internal fan comes on when the CPU temperature reaches 55C (could even be 60C), which only happens during games or other really processor intensive applications.

      Even then, the aluminum case remains room temperature (feels cool). The fan itself is very quiet. During light use (Internet, word processing) the Mini is absolutely silent and operates cool to the touch.

      The Powerbook on the other hand gets almost too hot to touch when the CPU hits 55C, and the internal fan is rather noisy in comparison.

      • Re:Cooling? (Score:3, Informative)

        So, that says nothing about how cool it runs, but how well it dissapates heat.

        The Powerbook radiates heat through it's case, while the Mac Mini is either keeping it internaly, or venting it in a more focused manner. (exhaust fan)
  • Warranty? (Score:2, Insightful)

    by Cambrant ( 735036 )
    ...but then the warranty will be void, and any mistake will be fatal. Damn Apple.
    • by Cambrant ( 735036 )
      Oh, I was apparently wrong. As long as you don't break it, the warranty is still valid.
      • by mgs1000 ( 583340 ) on Thursday February 03, 2005 @11:06AM (#11562123) Journal
        So you are saying the warranty is valid only if you don't need it? :)
        • Re:Warranty? (Score:4, Informative)

          by troc ( 3606 ) <`moc.cam' `ta' `cort'> on Thursday February 03, 2005 @11:11AM (#11562180) Homepage Journal
          Erm, no. The warranty is never valid if YOU break it, only if it breaks because it's faulty. If YOU break it, it's insurance that comes to the rescue, maybe. :)

          Troc
          • Re:Warranty? (Score:3, Interesting)

            by illumin8 ( 148082 )
            Erm, no. The warranty is never valid if YOU break it, only if it breaks because it's faulty. If YOU break it, it's insurance that comes to the rescue, maybe. :)

            You're right, and I also think that removing soldered jumpers from the motherboard will definitely void your warranty.

            Did you see the size of the jumpers [pipex.com]?!?!?! Crazy small...
    • Re:Warranty? (Score:5, Interesting)

      by Golias ( 176380 ) on Thursday February 03, 2005 @11:14AM (#11562202)
      When it comes to the Mac mini, you might want to consider this:

      The default warranty (if you don't buy the extended AppleCare) is one year.

      This is a $499 electronic device.

      A 1-year hardware warranty on a gadget this cheap is worth, what? Maybe $50?

      So whenever you are considering doing something like this (and yes, overclocking pretty much alwasys voids warranties, even if all the early FUD about opening the mini case turned out to be false), the judgement call you need to make is: Will this mod be worth more than about $50 to me?

      In the case of this mod, it's a way to turn a 1.25 GHz mini into a 1.42 GHz mini.

      But for $20 more than the price of upgrading the HD from 40GB to 80GB, you can get an actual 1.42 GHz mini with an 80GB drive already installed, and keep the warranty intact.

      So in this case, no. Probably not really worth it.

      However, on a system this inexpensive, it's really just a matter of time before some people start coming up with interesting hacks which are more than worth it.

      I doubt the mini will replace the X-Box as the hardware hacker's favorite toy anytime soon, but it will be interesting to see what happens over the next year or so.
      • Re:Warranty? (Score:3, Interesting)

        by drinkypoo ( 153816 )
        Yeah, the mini is three times the price of the Xbox, assuming you buy no accessories for either. The only benefit I can see as far as using it as a media player or similar is that you don't need an Xbox to USB cable. It's a lot faster and has more memory (and storage), even in the lowest trim, but the Xbox is cheap as hell.
        • Re:Warranty? (Score:5, Interesting)

          by Golias ( 176380 ) on Thursday February 03, 2005 @12:30PM (#11563047)
          The only benefit I can see as far as using it as a media player or similar is that you don't need an Xbox to USB cable.

          I see a few others.

          1. The mini is very quiet, the X-Box is notoriously noisy.

          2. The mini video card is modest by modern PC standards, but vastly superior to the one in the X-Box.

          3. The mini is ready for use as a media server with no hacking required. iTunes is a fantastic app for storing your music library. Plug an EyeTV 500 into the firewire port, and you've got a digital broadcast Tivo-alike. Install VLC (which is a free download), and you're playing full-screen videos of whatever gray-market stuff you find on the Internet. The DVI out plugs right into most modern HD televisons and projectors without the need for an adapter. Plus, all of this can be controlled with an IR remote from Keyspan, which I've seen on the web for as little as $22. The built-in bluetooth and 802.11g options are nice to have, as well.

          That said, it's not perfect.

          1. The CPU isn't really fast enough to give you full-frame 1080i HDTV via the EyeTV. Not the end of the world if you are using an XGA or WXGA projector, but still...

          2. You need a USB break-out box to get surround sound... but at least the OS supports both Dolby 5.1 and DTS.

          3. Hmmm... actually, that's the whole list.
          • Good post - but I thought I'd chime in with a comment:

            The [Mac mini] DVI out plugs right into most modern HD televisons and projectors without the need for an adapter.

            In my experience, this is often not the case. Even though high end telivisions have DVI jacks on them, they are using the YUV colourspace and not the RGB used for computer displays. I was annoyed to find this out, to say the least. Jacks are the same, but no-go. So the best video output you can do with the Mac mini is using the S-video do

  • Mmm... (Score:3, Funny)

    by Anonymous Coward on Thursday February 03, 2005 @11:02AM (#11562077)
    Stewed apple.
  • uhhh (Score:5, Insightful)

    by nomadic ( 141991 ) <nomadicworld.gmail@com> on Thursday February 03, 2005 @11:02AM (#11562078) Homepage
    So, you wanted a 1,42GHz Mac mini but either because of some distribution woes or because of your tight budget you could just get a 1,25GHz ?

    No, not really. 1.42 GHz isn't really so much faster than 1.25 to justify voiding the warranty.
  • Same 167 MHz FSB (Score:2, Interesting)

    by green pizza ( 159161 )
    The G4 is crippled by its 167 MHz FSB, so how about overclocking that for some real performance boosts?
  • by teiresias ( 101481 ) on Thursday February 03, 2005 @11:04AM (#11562102)
    Is the jump from 1,25GHz to 1,42GHz that great an improvement. Yes I know how many operations are done in every Megahertz but in my mind, the point of the mini was not speed but rather using less power for simple things. My e-mail, browser, Word, soltaire, etc is not going to open that much noticably faster with this bump.

    I like more speed as much as the next guy but the next guy didn't buy the Mac Mini for speed.
    • by green pizza ( 159161 ) on Thursday February 03, 2005 @11:14AM (#11562208) Homepage
      Good point.

      I bought a 512 MB 1.25 GHz Mac Mini last week. It's been a pretty sweet little machine. iMovie works great with MiniDV video, I don't have a HDV camcorder to try HD though.

      Garage Band ROCKS! 18 tracks of audio of different formats and it keeps on trucking!

      I haven't tried anything harder than Warcraft 3 or Sim City 4 on it yet though.
    • The mini really should be fast enough for most things. I have 1 ghz g4 tower. I do video editing/photoshop and dvd creation on it. The speed of that machine is good and the bus is about the same as the mini. I have 1.2 gigs of ram though.

      DVD mastering and my degraining phtotoshop filter are the only things that make me wish a faster processor. I'm patient with the photoshop filter which can take 20 seconds or so, because my images are large (70 meg per file) (The DVD stuff which can take hours.)
  • Mini (Score:4, Informative)

    by camcorder ( 759720 ) on Thursday February 03, 2005 @11:13AM (#11562192)
    Did you check the jumpers [pipex.com]? Good luck while playing with them.
  • by Capt_Troy ( 60831 ) <tfandangoNO@SPAMyahoo.com> on Thursday February 03, 2005 @11:31AM (#11562385) Homepage Journal
    Then your iMac Mini will be about as valuable as a melted iMac Mini! This will give a whole new meaning to the Rip, Mix, Burn media campaign.
  • by J_Omega ( 709711 ) on Thursday February 03, 2005 @11:38AM (#11562464)
    I see a bunch of posts discussing the fact that the mini will have problems cooling the overclocked CPU.

    Too lazy/busy to do some real research here, I know that someone here on /. can answer anyways.

    The same case is used for the faster processor. How different are the processors themselves? ie, The mini has already been designed to handle the heat output of the 1.45GHz, so how much more heat (if any) would an overclocked lesser cpu generate?

    Is cooling the overclocked chip even a concern?

  • by thodu ( 530182 ) on Thursday February 03, 2005 @11:46AM (#11562552)
    People complaining that the hack is really not worth voiding the warranty are missing the whole point. It is just the coolness factor out here. Somebody, somewhere figured out that by setting those specific tiny little jumpers (I still can't believe how tiny they are), the Mac Mini could be overclocked and shared this info with the whole wide world. Appreciate that and just think about what *you* have figured out lately. Losers.
  • by jxyama ( 821091 ) on Thursday February 03, 2005 @11:50AM (#11562600)
    6% increase in the CPU speed merits voiding the warranty? (and this *will* void the warranty - good luck trying to explain any heat damages when the apple S/N says what was purchased was a 1.25 GHz, but the machine profile says 1.42 GHz.)
  • by payndz ( 589033 ) on Thursday February 03, 2005 @11:51AM (#11562606)
    Funnily enough, the BMW Mini One can be 'overclocked' too. Like the CPU in the two Mac Mini models, both the One and the Cooper have the same 1.6 litre engine, the only difference being the engine management software. Must be something in the name 'Mini'...
    • by smithmc ( 451373 ) * on Thursday February 03, 2005 @12:53PM (#11563313) Journal

      Funnily enough, the BMW Mini One can be 'overclocked' too. Like the CPU in the two Mac Mini models, both the One and the Cooper have the same 1.6 litre engine, the only difference being the engine management software.

      We don't get the Mini One in the US; I had to look it up. 90 horsepower? You poor bastards.

  • by Matey-O ( 518004 ) <michaeljohnmiller@mSPAMsSPAMnSPAM.com> on Thursday February 03, 2005 @11:58AM (#11562673) Homepage Journal
    Really the WHOLE point of having a real OS is that the interactive stuff is interactive and the batch stuff happens when you're not lookin'...

    The MacMini will NOT make a good Doom3 machine. For interactive stuff (even, gasp, light video editing!) it's fine the way it is. For long term stuff (DVD encoding), background the app and do something else (even at the same time!) Who cares if it takes 25 minutes instead of 20 minutes?

    Generally, 'make DVD' is the last thing I do befor e I go to bed...it's always done by morning.

    If you wanted the last oomph of power, you shouldn't have bought apple's cheapest box!

  • UNDERclocking (Score:5, Interesting)

    by macklin01 ( 760841 ) on Thursday February 03, 2005 @11:58AM (#11562677) Homepage

    Actually, this might be interesting to use for underclocking. Take your Mac Mini 1.42, underclock it a bit to 1.25, and it's even less likely that the included fan will turn on. Makes it all the more of a silent computing solution.

    They do this type of thing all the time at silentpcreview [silentpcreview.com], although they gain a bit more (by way of silence) because they can also adjust the CPU voltage down once the clockspeed is reduced. Just a thought. -- Paul

  • by Danathar ( 267989 ) on Thursday February 03, 2005 @12:05PM (#11562752) Journal
    All this talk about saving money by overclocking it is goofy (not so goofy if you are just a nerd looking to play with it)

    I find it interesting that all the comparisons I've read primarily compare the hardware of the mac mini to the hardware at a comparibly priced Pee Cee system.

    The fact that one system runs OS X and the other runs Windoze always seems to be a secondary consideration when looking at the price tag and comparing it to a Dell/clone/ect...

    The fact that you can buy an OS X system that "feels" just as fast or faster than a comparible Pee Cee system AND has all the advantages of OS X over Windoze (security, ease of use, ect..) is something you should factor in when evaluating the price. How much is it worth to you in $$$? Is saving $200 bucks on a Dell worth the heartache that living in the windoze world entails?
    • by dustmite ( 667870 ) on Thursday February 03, 2005 @01:39PM (#11563883)

      Pee Cee price comparison weenies

      While you do have a point, and I happen to agree with your underlying point, you're never going to convince anyone like that. Because starting off by calling the people you're trying to convince "weenies" just attacks and aggravates them and puts them on the defensive. Once you've put someone on the defensive, any hope of having a rational, constructive argument is gone, as well as any hope of convincing them to see your viewpoint. The question is do you want to just insult people who are wrong about something, or do you actually want to help those people see that they are wrong and introduce positive change? (That's not easy.) If the latter, you'll have to change your strategy. Calling people "weenies" and telling them they're "living in the wrong world" is no way to convince anyone of anything, except for people who already agree with you (perhaps you just want the affirmation from that group?). Anyway, a better strategy is to open by "giving" something to the listener that they would like to hear, a concession that doesn't make them feel stupid, e.g. start out by pointing out the perceived merits of their argument are not baseless, e.g. you could say "it's true that a Dell PC with similar performance can be obtained slightly cheaper", but then (rationally) add valid (backed up) counter-arguments for why that little saving is not worth it, in a non-offensive way that doesn't make you sound like a zealot, which results in having the opposite of the desired effect, because most people instinctively do the opposite of what zealots do even if the zealot happens (by coincidence) to be doing the right thing.

  • by matyas47 ( 811167 ) on Thursday February 03, 2005 @12:14PM (#11562850)
    Does anyone know if you can overclock a PowerBook? I know that overclocking notebooks is generally considered a bad idea (heat dissipation), but if you can overclock a mini, why not? I've got a much used and abused 12" 867 AlBook that I would love to get up to 1 Ghz.
  • by piecewise ( 169377 ) on Thursday February 03, 2005 @12:40PM (#11563154) Journal
    Sorry, but if someone is going to tell me how to open my brand new computer and mess around with its internal workings, I don't want to read things like this:

    Here is the bottom of the board. Or whatever you call it.
  • by Luscious868 ( 679143 ) on Thursday February 03, 2005 @03:20PM (#11565112)
    Check out this hilarious Mac mini "review" [divisiontwo.com]. It's tongue and cheek, written from the prospective of an MCSE. I couldn't stop laughing.

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