Ramón G Castañeda

Q: Leopard v. Tiger: performance of applications in general on a G5 Quad?

Is there a consensus on the relative performance of applications [especially Photoshop 11.0.2 ("CS4") and/or VueScan] running under Tiger vs. Leopard on the same machine, e.g. a 2.5 GHZ PowerMac G5 Quad with 16 GB f RAM?  Is Leopard or Tiger faster?

 

Thanks in advance.

PowerMac, Mac OS X (10.4.11), 2.5G5Quad,16GB,7800GTX 512MB, Tiger

Posted on Aug 28, 2011 7:37 PM

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Q: Leopard v. Tiger: performance of applications in general on a G5 Quad?

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  • by romko23,

    romko23 romko23 Aug 28, 2011 9:09 PM in response to Ramón G Castañeda
    Level 2 (395 points)
    Aug 28, 2011 9:09 PM in response to Ramón G Castañeda

    I have the same G5 Quad as you do and I see Leopard is much faster with opening and running applications.. I guess because it has 4 x 2.5 ghz processors in it.. I just see that Leopard is much faster than Tiger.

     

    Btw, UNDISCLOSED... Quad G5 can be upgraded to 32GB PC2-4200 DDR2 memory.. I have done it and I now have 32GB.. you will need to get 8x4GB DDR2 chips of speed 533 mhz.

  • by BDAqua,

    BDAqua BDAqua Aug 28, 2011 9:31 PM in response to Ramón G Castañeda
    Level 10 (123,765 points)
    Aug 28, 2011 9:31 PM in response to Ramón G Castañeda

    In my testing Leo uses multiple CPUs & Cores better than Tiger.

     

    @ romko23

     

    Do you have a link to those DIMMs?

  • by Ramón G Castañeda,

    Ramón G Castañeda Ramón G Castañeda Aug 28, 2011 9:43 PM in response to romko23
    Level 4 (1,468 points)
    Desktops
    Aug 28, 2011 9:43 PM in response to romko23

    romko23 wrote:

     

    I have the same G5 Quad as you do and I see Leopard is much faster with opening and running applications.. I guess because it has 4 x 2.5 ghz processors in it.. I just see that Leopard is much faster than Tiger…

     

    That leaves me quite confused.  Since we're talking about comparing the performance of applications under Tiger and Leopard on the same machine, how would the "…4 x 2.5 ghz processors in it…" favor Leopard and not Tiger?  ???  

     

     

     

    romko23 wrote:

     

    …Btw, UNDISCLOSED... Quad G5 can be upgraded to 32GB PC2-4200 DDR2 memory.. I have done it and I now have 32GB.. you will need to get 8x4GB DDR2 chips of speed 533 mhz.

     

    That's a most interesting tip!  Too bad I didn't hear about it a few weeks ago, before I bought the four pairs 2-GB sticks.  Oh well, the 32-GB option probably costs and arm and a leg. 

  • by romko23,Helpful

    romko23 romko23 Aug 29, 2011 11:26 AM in response to BDAqua
    Level 2 (395 points)
    Aug 29, 2011 11:26 AM in response to BDAqua

    http://forums.macrumors.com/showthread.php?t=1126338&page=2

     

    I think you just need the 4GB PC2-4200 533 mhz memory and you will be fine.. It is now confirmed that the G5 Quad along with the dual cores of LATE 2005 will take up to 32GB of memory.. This also means its possible that the G4 Powerbooks can take more than 2GB for a total of 4GB of memory.. Theoretically, the G4 architecture can take up to 4GB, but yet Apple has it set to 2GB. Someone needs to try it on the last powerbook G4's with dual-layer.

     

    But, the G5 Quad does support 32GB.

  • by BDAqua,

    BDAqua BDAqua Aug 29, 2011 12:29 PM in response to romko23
    Level 10 (123,765 points)
    Aug 29, 2011 12:29 PM in response to romko23

    Great, thanks... have you been able to use the RAM beyond 16GB?