A Simple G5 Case Mod

Discussion in 'PowerMac G5' started by chaosdesigns, Dec 6, 2012.

  1. chaosdesigns

    chaosdesigns

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    Dec 6, 2012 at 3:26 AM #1
    chaosdesigns

    chaosdesigns

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    I wanted to explore the idea of a simple G5 case mod. The spectrum of difficulty for a G5 case mod is very broad ranging from water-cooled, powder-coated, and tricked-out to something simple. This mod explores the simple end of the spectrum. This case mod was completed in one day, once I had obtained all the parts. Also, I had a bunch of "spare parts" lying around that I wanted to put to good use.

    Parts
    - Intel Core i3-2120 Dual Core LGA1155 3.3Ghz Sandy Bridge (had lying around)
    - GigaByte GA-B75M-D3H motherboard (bought new for this build)
    - 2x4GB Kingston HyperX DDR3-1600 XMP Dual Channel RAM (bought new for this build)
    - Gigabyte Radeon GTX 520 (stole from Eerie Blue Glow...Eerie now runs Mountain Lion and HD 4000 graphics)
    - 500GB Hard Drive (was in the G5, originally)
    - LG 24X SATA DVD Writer (bought on sale a while ago for $9)
    - Corsair VX550W (bought on sale a while ago)
    - Corsair Front Panel Kit (had laying around for projects just like this)


    People love pictures, so I will spare the dialog. Feel free to ask questions, leave comments, etc.

    All the parts.
    [​IMG]


    An empty canvas, er.. I mean case.
    [​IMG]


    Test fitting the motherboard.
    [​IMG]


    Using the shorter standoffs, sets the graphic card height perfectly.
    [​IMG]


    The edge of the board is tight up against the top shelf.
    [​IMG]


    Attaching the shorter standoffs to an old mATX board for glueing.
    [​IMG]


    Another view of the standoffs, along with the bottom tip of the graphics card.
    [​IMG]


    Mounting the hard drive on the top shelf.
    [​IMG]


    I drilled 3 holes in the top shelf to secure the hard drive (one was already there.)
    [​IMG]


    And the cables fit nice.
    [​IMG]


    Another view.
    [​IMG]


    The cut-out on the rear panel.
    [​IMG]


    Close up.
    [​IMG]


    From inside.
    [​IMG]


    Installing the top shelf.
    [​IMG]


    Lined up where the standoffs will connect to the G5. I used masking tape to limit the glue.
    [​IMG]


    Roughened up the bonding surface.
    [​IMG]


    Gluing the standoffs.
    [​IMG]


    While the glue dries...


    Made the front panel cable. USB, Power switch, and Power LED only.
    [​IMG]


    Made a power cord pigtail using the original G5 power socket.
    [​IMG]


    Prepared the motherboard.
    [​IMG]


    Installed RAM, CPU and stock heatsink.
    [​IMG]


    ...And the glue is dry!


    Standoffs are complete.
    [​IMG]


    Glued the power pigtail.
    [​IMG]


    Installed motherboard.
    [​IMG]


    I used industrial strength velcro to mount the power supply.
    [​IMG]


    Velcro on the PSU.
    [​IMG]


    I flipped the G5 case upside down and completed installing the top shelf.
    [​IMG]


    Installed the PSU.
    [​IMG]


    Installed the "special" screws onto the bottom of the optical drive.
    [​IMG]


    Installed the optical drive.
    [​IMG]


    After some (minor) cable management.
    [​IMG]


    Tidied up the PSU cables.
    [​IMG]


    Some shots of the completed build.
    [​IMG]


    Front panel cable neatly hidden behind the motherboard. I can't say much for the other ones.
    [​IMG]


    Rear panel.
    [​IMG]


    Close up.
    [​IMG]


    Installing Mac OSX Lion

    1) Used "Install Max OS X Lion.app" v 10.7.4 and built a UniBeast USB Installer on a 16GB USB Flash Drive
    Building the UniBeast installer took 12 minutes.

    2) Download BridgeHelper5 and Install onto USB Flash Drive. This provides support in Lion 10.7.4 for Ivy Bridge Processors
    using the Native mach_kernel vers 11.4.2

    3) Enter PC Bios and Load Defaults and ensure SATA mode is set to AHCI
    Ensure High Precision Event Timer (HPET) is enabled. (This was the default)
    Save bios settings

    4) Insert the USB stick into PC and Boot and Install onto PC (this is detailed in step 1 instructions)

    5) Do a Software Update to latest version (10.7.5) ** for some reason, the Ethernet jack is working! **

    6) Reboot the USB stick, and choose to boot into the Lion Installation.

    7) Use MultiBeast 4.6.1 to install the following

    - UserDSDT Install
    - Kexts & Enablers/Network/Realtek Gigabit Ethernet 2.0.6 for 10.7
    - Kexts & Enablers/Audio/Realtek ALC8xx/Non_DSDT HDA Enabler/ALC887-888b
    - Patched AppleHDA/ALC88b-887/v100302 Current
    - Kexts & Enablers/FakeSMC
    - Kexts & Enablers/FakeSMC/Motherboard Plugins
    - Kexts & Enablers/FakeSMC/HW Monitor Application

    8) Reboot, Set Boot order in BIOS

    9) Install Software: GeekBench, Temperature Monitor, TextWrangler, Carbon Copy Cloner



    What Works
    - Sound
    - Networking
    - Sleep-Wake
    - Speed Step
    - Monitor Resolution Changes
    - VGA, DVI
    - USB 3 ports (not tested at USB 3 speeds)

    Happy Modding!
    chaos
     
    DifferentComputers likes this.
    Last edited: Jul 3, 2017
  2. Jeffinslaw

    Jeffinslaw

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    Dec 6, 2012 at 4:28 AM #2
    Jeffinslaw

    Jeffinslaw

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    That sure was simple if you were able to do it in a day! Now let's see that Mac Pro mod we talked about! ;)

    Jeffinslaw
     
  3. joshfabean

    joshfabean

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    Dec 6, 2012 at 5:07 AM #3
    joshfabean

    joshfabean

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    Impressive. Makes me feel bad for having an old gutted G5 case laying around!
     
  4. chaosdesigns

    chaosdesigns

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    Dec 6, 2012 at 5:10 AM #4
    chaosdesigns

    chaosdesigns

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    Yes, this G5 mod would be at the opposite end of the spectrum from yours.

    The Mac Pro mod is scheduled for some time in the future when a Mac OSX compatible motherboard is available that supports two 10-core Xeon E5-2600 V2 Ivy Bridge CPUs. :thumbup: :thumbup: :thumbup:

    chaos
     
  5. chaosdesigns

    chaosdesigns

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    Dec 6, 2012 at 5:22 AM #5
    chaosdesigns

    chaosdesigns

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    Stay focused on your cube mod. It will be very rewarding! Save the gutted G5 for a rainy day. ;)

    chaos
     
  6. kiwisincebirth

    kiwisincebirth

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    Dec 6, 2012 at 5:23 AM #6
    kiwisincebirth

    kiwisincebirth

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    Hi Chaos

    Love the work as always, one day is impressive. Not wanting to add considerably too much, this is meant to be minimum build after-all, would you consider he following improvements to the build. Your call.

    1. HDD Mounting: Any reason why you didn't re-use the apple HDD mounting frame, not that its technically needed, but keeping it doesn't add any time to the build does it?
    2. IO Port Access: I would suggest trimming off the bottom few millimeters of the plastic fan bracket (see picture), this is a trivial cut compared to cutting the aluminum. It should only take a minute of so to do this, and depending on the MB, gain access to a few additional ports.
      A Simple G5 Case Mod - Reply to Topic-1.jpg
    3. Cooling: I notice you don't have any case exhaust fans, how are the temps inside the case? Two simple suggestions to improve this.

    • Use thin cardboard to create a cowling for the PSU, so that air is sucked in/out of the case rather than just recycled (see picture). Cut and fold the cardboard, Use sellotape to attach to the PSU. This should be trivial and could improve temperatures.
      A Simple G5 Case Mod - Reply to Topic-2.jpg
    • Mount a single case fan, screwed directly to the mounting bracket in your pictures. This just requires the purchase of a fan, four holes drilled through the plastic bracket, four screws and attachment to power. Easy.
     
  7. Jeffinslaw

    Jeffinslaw

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    Dec 6, 2012 at 6:12 AM #7
    Jeffinslaw

    Jeffinslaw

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    That would most likely be an HPTX motherboard which would fit in the case but would require removal of everything essential of the Mac Pro case like the drive sleds and the position of the power supply.

    Jeffinslaw
     
  8. chaosdesigns

    chaosdesigns

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    Dec 6, 2012 at 6:50 AM #8
    chaosdesigns

    chaosdesigns

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    Hi kiwisincebirth,

    1. The reason I didn't use the original G5 drive cage is because I used it in one of my other G5 mods, and this build is for my 74 year old father who thinks 500GB is utterly huge! Also, those hard drive rail mounting screws are worth their weight in gold, so I will be using them in another build as well.

    2. I was thinking the exact same thing.

    3. I gave this a lot of thought. Keeping the build modest also kept down the heat generation. The temps are great! It idles between 32 and 37 degrees C, and peaks at 50 during a Geekbench. The G5 case is amazingly porous. I'm only running an i3 and I am not over clocking, so not much heat is generated. There is so much open open space in the case that no heat can really build up. It simply flows out. The power supply is idling for the most part and is cold to the touch. The warmest part is just above the passive heat sink on the graphics card. I have yet to do a full heat test, but I don't think I will need to add a fan. If I have to add a fan, I will probably use the original real panel exhaust fan mounts as you suggest. I really do like how silent it is.


    Thank you for your well thought out suggestions. Your cowling suggestion is one I might implement if heat does become an issue.
    Much appreciated!

    chaos
     
  9. joshfabean

    joshfabean

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    Dec 6, 2012 at 4:09 PM #9
    joshfabean

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    Yes the Cube is my "budget" mod. I was saving the G5 for when I want to drop over $2,000 on a computer and get dual monitors and go all out.
     
  10. sonicseamus

    sonicseamus

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    Dec 6, 2012 at 7:34 PM #10
    sonicseamus

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    Dual HiPDI monitors, no less ;)!
     

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