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Fastest, RELIABLE used Mac G5 Quad?

5911 Views 65 Replies Latest reply: Sep 4, 2011 7:58 PM by Ramón G Castañeda RSS
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Ramón G Castañeda Level 4 Level 4 (1,445 points)
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Aug 2, 2011 4:11 AM

I have a need for the fastest PPC (non-Intel) machine in order to run certain software under Tiger for the rest of my life (I have a short personal life expectancy, under 18 months or so).  I'd need it to be noticeably faster than my current machine, of course.

 

There are some G5-Quad and G5-Dual machines available on eBay.  I understand that some G5 Quad models are better avoided due to power supply problems, but I'm not sure which ones.

 

I'd be grateful for any input from the experienced forum contributors who may have any advice.

 

Thanks in advance.

Dual 1.25MHz MDD G4, 2GB RAM, 4 int dr.3ext FW drives, Mac OS X (10.4.11), nVidia 7800 GS 425MHz 256MB video card, dual 22" CRT monitors
  • japamac Level 7 Level 7 (24,390 points)
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    Aug 2, 2011 5:52 AM (in response to Ramón G Castañeda)

    Hi-

     

    The Quad is the fastest PPC machine.

     

    They didn't have any more power supply issues than other models, and are possibly one of the more reliable machines.

    /___sbsstatic___/migration-images/158/15821697-1.png

    http://www.macintouch.com/reliability/pmg5.html

     

    The one caution point for the Quad is the liquid cooling.

    However, I haven't seen that the Quad is a prone to failure as early LCS machines (all 2.5 GHz and 2.7 GHz dual processor G5's).

     

    If one wanted to forego the potential minefield of the LCS, a late 2005 2.3 GHz dual core would be the fastest air cooled machine.

     

    Geekbench CPU and Memory Benchmark:

     

    Power Mac G5 (Late 2005)
    PowerPC G5 (970MP) 2.5 GHz (4 cores)
    3318
    Power Mac G5 (June 2004)
    PowerPC G5 (970FX) 2.7 GHz (2 cores)
    2259
    Power Mac G5 (June 2004)
    PowerPC G5 (970FX) 2.5 GHz (2 cores)
    2100
    Power Mac G5 (Late 2005)
    PowerPC G5 (970MP) 2.3 GHz (2 cores)
    2084
  • BDAqua Level 10 Level 10 (114,685 points)
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    Aug 2, 2011 2:37 PM (in response to Ramón G Castañeda)

    Just in case you're wondering Ramón, nothing much to be said after japamac great reply.

  • BDAqua Level 10 Level 10 (114,685 points)
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    Aug 2, 2011 10:24 PM (in response to Ramón G Castañeda)

    His posts are 100% correct, mine are 80-90%!

  • The hatter Level 9 Level 9 (58,535 points)
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    Aug 3, 2011 6:43 AM (in response to Ramón G Castañeda)

    One thing you can do to improve performance is add PCIe SATA and an SSD or two to help. And the G5 Quad supported SATA II. WD Black 1.5TB $109 make nice drives as well.

     

    Depends on what you will be using it for, but easy to install Sonnet G5 Jive and bracket for 3 drives connected to controller with internal ports.  I'd love to see a better way to power 2-3 SSDs as they consume so little but still use standard SATA power connector (3 would fit in one drive bay otherwise).

     

    With 1kw PSU, you might also want a 1500W / 900W UPS to power and protect your Quad investment.

     

    When you get it, look under the floorboards for dust build up as well as for any sign of there having been LCS issue. They can be repaired.

     

    DVWarehouse is a good source for parts.

    OWC for some drives, RAM, controllers that are Mac oriented.

    ebay for graphic card upgrade if you want/need for your project.

  • BDAqua Level 10 Level 10 (114,685 points)
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    Aug 4, 2011 2:14 AM (in response to Ramón G Castañeda)

    Thanks!

  • japamac Level 7 Level 7 (24,390 points)
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    Aug 4, 2011 3:46 AM (in response to Ramón G Castañeda)
    nVidia GeForce 7800 GS 425MHz 256 MB).  I wonder if I could use that, at least to begin with

    If you get a dual core (Late 2005), No, you won't be able to use the AGP card in the PCIe machines.

    All other G5's will happily use the 7800 GS.

     

    So, in answer to the next (anticipated) question, the best card for the PCIe machines is a flashed geforce 7800 GTX.

  • The hatter Level 9 Level 9 (58,535 points)
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    Aug 4, 2011 6:37 AM (in response to Ramón G Castañeda)

    SSD's are tiny and use just a tiny amount of power.

     

    10 SSDs could be powered off one standard SATA power cable/connector.

     

    But SATA power cables could be re desigined to be smaller? making it possible to put 4 SSDs in one drive bay and have power and data cables.

     

    Ideal SSD is probably on a PCIe card, but PC only for most, and not bootable.

     

    Pre-SSD, I talked a couple people into 4-5 WD 10K VelociRaptors - array for system, another array for scratch, and yet two SSDs $400-500 would do that better.

  • romko23 Level 2 Level 2 (395 points)
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    Aug 28, 2011 9:13 PM (in response to BDAqua)

    Sometimee mine are 300 percent correct. No one is a GOD when it comes to this stuff. I pick up on computer hardware a lot faster than others + I have A+ certification and MCSE.

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