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Fan issue after upgrading ram, Mac Pro 4.1

457 Views 13 Replies Latest reply: Mar 10, 2013 4:07 PM by japamac RSS
Dag M Calculating status...
Currently Being Moderated
Mar 10, 2013 12:33 AM

Hi!

Inatalled 24 GB (3 x 8 ) OWC memory in my Mac Pro quad core 2.66 Mhz 2009

System profiler count all memory as installed ok.

Photoshop Cs6 recognize all ram and all is good.

After approx. 10minutes from startup the Boost A Fan maxes to 4000 rpm. After restart of the system problem perists from startup, Tried SMC reset, solves rhe problem untill reboot. After every reboot i get the Memory Utility pop up as described by othhers.

as for now i am back to 7 GB ram and everything is back to normal. Any ideas to what causes the fan to go wild as Istat reports no high temperutures and the issue returns without any obvious reason.

 

Dag

Macpro.jpg

Memory.jpg

Mac Pro (Early 2009), OS X Mountain Lion (10.8.2)
  • japamac Level 7 Level 7 (24,390 points)
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    Mar 10, 2013 12:39 AM (in response to Dag M)

    https://discussions.apple.com/thread/2813211?start=0&tstart=0

     

    You tried log in as Admin, dismissing the utility?

  • japamac Level 7 Level 7 (24,390 points)
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    Mar 10, 2013 12:46 AM (in response to Dag M)

    What does OWC say?

  • japamac Level 7 Level 7 (24,390 points)
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    Mar 10, 2013 1:59 AM (in response to Dag M)

    My OWC 4 GB DDR3 1333 MHz DIMMs show:

      Manufacturer:          0x0000

      Part Number:          0x000000000000000000000000000000000000

      Serial Number:          0x00000000

     

    That's all just "trivia" as far as function goes.

    Does the memory report "OK"?

     

    Do let us know what OWC says.

    It will be a help to others.

     

    My experience with OWC, product issues (or not), has always been good.

    MacBook Pro, Mac OS X (10.7.3), 15" 2.2 GHz i7, 8GB RAM
  • japamac Level 7 Level 7 (24,390 points)
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    Mar 10, 2013 3:52 AM (in response to Dag M)

    What happens when you put a 1GB or 2 GB DIMM in the #4 position and the 8 GB DIMMs in 1,2 and 3?

  • The hatter Level 9 Level 9 (58,540 points)
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    Mar 10, 2013 5:56 AM (in response to Dag M)

    the 1st thing I do us run with just new RAM to avoid mixing which some 8GB DIMMs will not do and to insure the set works

  • Grant Bennet-Alder Level 8 Level 8 (48,110 points)
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    Mar 10, 2013 9:32 AM (in response to Dag M)

    As I changed memory configuration without a clean install there may be some proseesses dependent on a module in the 4th memmory slot.

    That is not an issue. The Operating System isolates that from every Application.

    Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers
  • Grant Bennet-Alder Level 8 Level 8 (48,110 points)
    Currently Being Moderated
    Mar 10, 2013 9:34 AM (in response to japamac)

    japamac-

     

    was that a wild guess, or is there some principle behind your suggestion?

    Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers
  • japamac Level 7 Level 7 (24,390 points)

    was that a wild guess, or is there some principle behind your suggestion?

    Troubleshooting methodology.....

     

    Most all install instructions include filling the fourth slot with a leftover DIMM.

    I noticed the previous configuration filled the 4 slots.

    There were no fan issues with the original configuration.

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