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Thread: G4 MDD Help & Links

  1. #1
    Join Date
    Jan 2001
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    Lightbulb G4 MDD Reference

    MDD upgrade experience
    An easy to upgrade system.


    All Hardware Manuals
    Apple MDD Support page
    About Cable Select
    Using 128 GB or Larger ATA
    Customer Installable Parts - PDF Guides
    Apple G4 MDD Discussions
    G4 MDD Specs
    G4 MDD PDF Manual
    G4 MDD Developer Notes
    Power Mac G4 (MDD) Service Manual


    PC3200 DDR400 512MB
    Memory Identified as PC2600
    PC2700/PC3200 in 867DP MDD
    MDD Memory Reference
    Radeon 9000 Pro Sleep Issue
    ATI Radeon 9600 OEM
    Radeon 9000 vs 9600 vs 9800 Review

    G4 MDD system mods:

    Modifying FSB 133/167MHz
    Case MOD MDD (photos)
    MDD Liquid Cooled
    How to liquid cool MDD
    Water-cooled MDD thread
    Damien's hacks
    G4 MDD case mods
    MDD Cooling Mods3 (another example)
    Vantec Iceberq Copper BGA Ramsink
    MDD to Gige (pdf guide "not found")
    MDD PSU ATX Case Mod

    Wiring up a G4
    Noise Blocker
    MDD Noise Reduction
    Copper heatsink
    Verax Order page
    Radeon 9800 Pro cooling/silencing
    Arctic Cooling Silencer Radeon 9800
    Arctic VGA cooler

    SmallDog Service Parts
    WeLoveMacs: G4 MDD Service Parts
    HardCore Mac LB
    Pre-Owned Macs
    ebay logicboard

    MDD parts and accessories:

    HDD Cooler
    Slot Blowers
    ArctiClean 1 & 2
    Arctic Silver 5 3.5G
    Panasonic Panaflo FBA06A12L1BX 60 x 25.5mm Fan
    EBM #412FH 40x10mm Tubeaxial Fan
    Panasonic Panaflo FBA08A12H 80x25mm Fan
    80mm Blue Anodized Aluminum fan filter
    Panasonic Panaflo FBA09A12L1A 92 x 25.5mm Fan
    Panasonic Panaflo FBA12G12L1A 120 x 38mm Fan
    Last edited by TZ; 06-22-2006 at 11:56 AM.

  2. #2
    Join Date
    Jan 2001
    Mobius Strip

    Lightbulb Radeon 9000 Pro

    Power Mac G4 (Mirrored Drive Doors): Does Not Wake From Sleep With Radeon 9000 Pro Graphics Card

    A Power Mac G4 (Mirrored Drive Doors) computer with an ATI Radeon 9000 Pro graphics card installed may have difficulty waking from sleep.


    When you press a key on the keyboard, or move the mouse to wake the computer, it may briefly wake up, but then unexpectedly goes back into sleep.

    This issue occurs when one of the following is connected to the display card's DVI port:

    * a monitor with a DVI-style connector
    * a VGA monitor using a DVI to VGA adapter
    * a DVI to VGA adapter that does not have a monitor connected to it

    Products affected

    * Power Mac G4 (Mirrored Drive Doors) with ATI Radeon 9000 Pro graphics card
    * Mac OS X 10.2

    KB #61697

    A Power Mac G4 (Mirrored Drive Doors), Power Mac G4 (FW 800) or Power Mac G5 computer may restart after the computer has been shut down when it is connected to certain third-party VGA and DVI displays using the DVI connector on the computer.


    The computer restarts after it is shut down. This occurs when certain third-party VGA and DVI displays are connected to the computer's digital video interface (DVI) port.

    Products affected

    * Power Mac G4 (Mirrored Drive Doors)
    * Power Mac G4 (FW 800)
    * Power Mac G5
    * Some third-party DVI displays
    * Some third-party VGA displays (with DVI to VGA adapter)
    * Apple graphics cards with both an ADC and DVI connector

    VGA Extractor for ADC Dr. Bott, LLC
    ADC to VGA Adapter Gefen Inc.
    ADC to DVI Adapter Apple Computer, Inc.

    "Locating Vendor Information"

    KB #86219 Computer Restarts After Being Shut Down

    The ATI Radeon 9800 draws 75W.

    Cooling Radeon 9800

    G03 Graphics Card Cooler with Verax Radial Fan Suitable for ATI Radeon 9500-9800 $79.00 USD
    G03AX Graphics Card Cooler with axial fan Suitable for ATI Radeon 9500-9800 $59.00 USD

    Verax Order Page
    G03 Product page

    My understanding was that the G03 had been updated and modified.
    PDF Install Manual G03

    Quiet, Adjustable Speed Cooler for 9800 Pro ($29.99)
    XLR8 Article on 9800
    ATI Artic Cooler
    Nvidia GeForce 4Ti, ATI Radeon 9000pro and 9700pro
    Build in Video card performance:
    Last edited by TZ; 06-02-2005 at 02:38 PM.

  3. #3
    Join Date
    Jan 2001
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    Lightbulb Video card over-clocking DB


    DUX from the MacBidouille forum wrote an overclocking results database, where users can compare results for various cards and enter their own: (in French and English).

  4. #4
    Join Date
    Jan 2001
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    Lightbulb MDD Memory Upgrade

    Power Mac G4 MDD 867DP, you can click on this article:
    In it Apple says that PC2700 and PC2100 will work together on a 133MHz bus as if they are both PC2100 [backwards compatible].

    For your reassurance, on page 23 of Apple's "Developer Note" for "PowerMac G4" dated March 14, 2003 [this note is for the FW800, I don't remember how I downloaded it]: "For the 1 GHz PowerMac G4 computer, the main memory bus connects the main memory to the U2 IC via a 133 MHz, 64-bit data bus. For the 1.25 GHz or 1.42 GHz configurations, the main memory bus connects the main memory to the U2 IC via a 167 MHz, 64-bit data bus. For the 1 GHz computer, the minimum speed DDR is 2x133 MHz, which is DDR 266 (PC2100). For the 1.25 GHz and 1.42 GHz computers, the minimum speed DDR is 2x167 MHz, which is DDR 333 (PC2700)."

    I draw this to your attention for Apple's references to "minimum speed DDR." When you combine that language with the first article's info that says PC2100 RAM alone will not start up a Mac with a PC2700 minimum requirement, and will not even show up when mixed with PC2700 RAM where that is the minimum required - you can see that Apple is talking about backward compatibility.

    You can then click through the apple tab up above, then "Hardware" underneath, then click on "Mac mini" and "Tech Specs" to see that Apple regards their memory spec for the mini to be "PC2700 (333MHz) DDR SDRAM." If you are familiar with the FACT that Apple is delivering most Mac minis with memory that is PC3200 (400MHz) DDR SDRAM, and read what one of their largest memory suppliers Micron [Crucial is 100% owned subsidiary] says:

    then you understand that Apple specs are minimums, and that, when it is to their cost advantage, Apple is happy to supply their customers with products that are far above spec and are of more recent and improved design. More PC3200 RAM is now sold than either PC2700 or PC2100, therefore the higher volume product has become the lower cost, and CAN be sold at a lower price (not that everyone will publicly quote a lower price).

    You can also go here and read Micron's 2003 press release about their introduction of DDR400 memory (PC3200) and that new product's support for DDR333 (PC2700):

    See also, this post on MDD Memory
    Last edited by TZ; 04-10-2005 at 07:49 AM.

  5. #5
    Join Date
    Jan 2001
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    Lightbulb MDD Liquid Cooling

    PowerMac G4 Dual 1.42GHz.

    The machine has been overclocked to 1.50GHz (although we did have 1.58GHz going for a while) and is kept cool with an Aquagate Mini R80 using Steve Smedley's copper shim and stainless steel plate (detailed in an earlier post to The full details are in the G4 Renovation section on my website:

    There have been no case modifications made (although one very minor change may happen soon) and everything is contained within the machine. Still some tweaks and improvements going on, which will pop up on the site once they're done, but there's a fair bit of info on there about the various fans and components in the FW800 G4 which hopefully people will find useful.

  6. #6
    Join Date
    Jan 2001
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  7. #7
    Join Date
    Jan 2001
    Mobius Strip

  8. #8
    Join Date
    Aug 2003
    Under the Midnight Sun

    Default TZ just a ...

    Thank you for all your hard work on this thread... we still have a crippled (one dead) CPU here in our MDD and the support you have given really is appreciated... SO Much information here.
    MacBook Pro Uni 2.4GHz with express card slot

    iMac G5

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