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my new mac mini system

Discussion in 'Mac' started by Jakeman, Jul 10, 2010.

  1. Jakeman

    Jakeman MSC Founder and Donator

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    The apple store had my mini for a few days and was unable to reproduce the problem so they didn't repair anything.

    I will probably visit the store and play WoW for a couple hours to reproduce it for them.
     
  2. Jakeman

    Jakeman MSC Founder and Donator

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    I was unable to reproduce it in their store. Probably because it's 65 degrees in there. Now I get to do additional tests and bring it back to them sometime later.
     
  3. Jakeman

    Jakeman MSC Founder and Donator

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  4. Jakeman

    Jakeman MSC Founder and Donator

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    I was able to significantly reduce heat by undervolting, but the problem remains. Now I am trying both undervolting and increased fan speed.

    I was able to take a screenshot of the artifacting. I will show it to the apple guy. But I am not hopeful that they will do anything about it since they can't reproduce the problem in their refrigerator.
     

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  5. Jakeman

    Jakeman MSC Founder and Donator

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    cool, the screenshot was enough for them. They are going to replace the board (which includes the graphics card which is the suspect component).
     
  6. harleyb

    harleyb Peasant

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    But now they know what I look like!
     
  7. Elbereth

    Elbereth MSC Commander and Donator

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    Yea! I've been working at not commenting too much here, but I'm glad they are doing right by you.
     
  8. Jakeman

    Jakeman MSC Founder and Donator

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    Just got my mini back with the new board. I hope that fixed the problem.

    harley's superduper program worked well for the second time in imaging/restoring my system for these service visits.
     
  9. Jakeman

    Jakeman MSC Founder and Donator

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    so far so good. No graphical problems yet since the repair.

    i started getting some pretty bad distortion in the internal speaker recently. I will need to get some external speakers.
     
  10. Jakeman

    Jakeman MSC Founder and Donator

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  11. Jakeman

    Jakeman MSC Founder and Donator

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    Unfortunately the heat problems never fully went away. The system still overheats with games. And it's unstable in games with undervolting, so I get to choose between crashing and overheating if I want to play games. I am considering running it caseless with additional coolers mounted on the heat pipes.

    I am disappointed that Apple ships computers that overheat like this. I will be switching back to PC soon. I think I will build a mini-itx system with a discrete graphics card. That was my original plan, but I chose the mini because of its low power consumption. But power is less of a concern now because I was unable to find tiny house parking so I am no longer preparing for off-grid.
     
  12. SpocKirk

    SpocKirk Forum Moderator and Donator

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    Do they still build the Minis with no fans at all?
     
  13. harleyb

    harleyb Peasant

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    I'm pretty sure the only fanless desktop Apple's ever made is the Cube.
     
  14. SpocKirk

    SpocKirk Forum Moderator and Donator

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    Oh yeah, that's a little farther back.
     
  15. Jakeman

    Jakeman MSC Founder and Donator

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    The mini has a squirrel cage fan that blows over fins connected to a heatpipe that conducts heat from both the CPU and GPU. Here is the take apart:

    http://www.ifixit.com/Teardown/Mac-Mini-Model-A1347-Teardown/3094/1

    The cooling is extremely minimal. Using one heatpipe for two processors is ballsy. And the fan is very low flow.

    If I mount it upside down and remove the case then I could mount some chipset coolers onto the pipe, like this one:

    http://www.heatsinkfactory.com/enzotech-mst-81-vid-111.html

    Or I could even remove the pipe completely and install separate coolers for each processor. But part of me refuses to fix their design. That's not my job. If I am to design my own system then I will build one.
     
  16. Jakeman

    Jakeman MSC Founder and Donator

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    I remember selling those at CompUSA. They got pretty hot. I never tried gaming on one.

    There was a manufacturing problem where the casing was scratched or cracked on many new cubes. We had to process a lot of returns for this cosmetic problem. Sometimes I wonder if cube owners ever actually used the computer. The obsession with cosmetics was striking.
     
  17. SpocKirk

    SpocKirk Forum Moderator and Donator

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    http://www.thermaltakeusa.com/Product.aspx?S=1138&ID=1904
     
  18. Jakeman

    Jakeman MSC Founder and Donator

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    :eek:

    Unfortunately there is no way to properly mount such a cooler. The CPU and GPU are soldered components without a socket or mounting holes. The best you can do is smaller coolers (such as chipset coolers) that are mounted with thermal tape.
     
  19. SpocKirk

    SpocKirk Forum Moderator and Donator

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    zip-ties!!
     
  20. harleyb

    harleyb Peasant

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    I put a rather rare Apple-branded GeForce 3 in my friend's Cube. That got pretty dang toasty pretty fast. His sister left a kleenex box on top of it once and since it only cools via convection it eventually shut down. Took him a while to figure out why...
     

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