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4GB RAM TO 8GB RAM

5687 Views 10 Replies Latest reply: Jun 26, 2012 5:49 AM by Edotho RSS
sublimaze Calculating status...
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Apr 9, 2011 12:54 AM
Hello everyone.
I just switched out my RAM on my mid 2010 13" MacBook Pro from 4GB to 8GB, but when I go check the About This Mac, it still reads 4GB RAM. Why wouldn't that switch and read what is now inside? Or do I need to do something to help it read the new memory? Given that the computer starts up and i'm online on it, I figure the RAM is in correctly. Not to mention that it was extremely easy to switch out.
Has anybody seen this happen before?
MacBook Pro 13' Mid2010
  • Rodrigo Zahr Calculating status...
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    Apr 9, 2011 1:57 AM (in response to sublimaze)
    Make sure the Ram you installed is compatible with your MBP
    Quad 2.3 MBP 15" HR Glossy, 8GB Ram, Mac OS X (10.6.6), MP 2.8 Quad - 8GB Ram
  • iVmichael Level 6 Level 6 (13,725 points)
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    Apr 9, 2011 4:56 AM (in response to sublimaze)
    It might be only reading one card if not fitted correctly, or

    *How to you ensure your MacBook Pro can address 8GB of RAM*

    Check the Boot ROM Version in your System Profiler at this link:
    http://support.apple.com/kb/HT1237
    MacBook Pros with a Model ID of MacBookPro5,1 should have a Boot ROM Version of MBP51.007E.B05.
    If your Boot ROM version does not match the numbers above, download and update the Firmware:
    MacBook Pro EFI Firmware Update 1.8 (Apple.com Download)
    http://support.apple.com/kb/DL975
    Once you have ensured that the Boot ROM is the correct version, make sure your Operating System is updated to Mac OS X v10.6.6. You must be running Snow Leopard to address 8GB on these systems.

    2.4Ghz 15" 8GB RAM 500GB/7200 Unibody MBP; + Macs, PCs, iPods, iPhones, AppleTV, Mac OS X (10.6.7)
  • tjk Level 7 Level 7 (24,130 points)
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    Apr 9, 2011 9:17 AM (in response to sublimaze)
    Hi s, and welcome to Apple Discussions.

    Open System Profiler > Memory and see which module/bank is being read.

    Try swapping RAM: remove one module, try booting, move that module to the other slot, try booting, repeat with other module. This should identify whether one of the modules or one of the slots is bad.
  • Rodrigo Zahr Level 2 Level 2 (295 points)
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    Apr 9, 2011 2:06 PM (in response to sublimaze)
    Restart you MBP and on startup press cmdalt+PR wait "keep pressing" until you hear the startup tone 3 times then let go.
    check your RAM
    Quad 2.3 MBP 15" HR Glossy, 8GB Ram, Mac OS X (10.6.6), MP 2.8 Quad - 8GB Ram
  • iVmichael Level 6 Level 6 (13,725 points)
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    Apr 9, 2011 3:04 PM (in response to sublimaze)
    +What should I do?+

    Check your Boot ROM version as I posted ?

    If that's not up to date then it can't see all the RAM ...

    If the PRAM reset doesn't help then I'd suspect a bad RAM card, try swapping them around into slot 1 and see if they both work individually.

    2.4Ghz 15" 8GB RAM 500GB/7200 Unibody MBP; + Macs, PCs, iPods, iPhones, AppleTV, Mac OS X (10.6.7)
  • Sauceysack Calculating status...
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    May 5, 2011 4:54 PM (in response to iVmichael)

    Hi Michael,

     

    It looks like you have the same specs as me regarding your MBP 15" (2.4 ghz/ OS X 10.6.7/ early '08 model); I would like to install 8GB RAM like you and was wondering if your computer recognizes the full 8gb. I've read places that my processor had to be at least 2.6ghz in order to "see" all 8gb. Did it work for you, if so what kind of RAM did you install?

  • Edotho Calculating status...
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    Jun 7, 2012 6:07 AM (in response to sublimaze)

    Hi guys,

     

    Glad to here that I am not the only one stuck with this issue. I have recently invested in a new macbook pro with ssd disk and 4 GB 1067 MHz DDR3.

     

    Only reason why i got this one was because I thought i could upgrade to 8 GB ram. However, with the 8GB ram installed (kingston by the way which i know is compatable because I have it on my other macbook pro). Nevertheless, when installed. I notice it only recognizes 4 GB of the 8 GB installed.

     

    I have also tried resetting PRAM, along with trying server different RAM combinations but i still only recognizes 4 GB. It's as if I am running a windows pc with 32-bit system, which only support 3.7 GB RAM.

     

    In short, I was wondering if any of you have solved this issue??? Considering the post is quite old.

     

    Thanks for any advice / ideas.

     

    Hope to hear from anyone shortly!

  • iVmichael Level 6 Level 6 (13,725 points)
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    Jun 9, 2012 4:31 AM (in response to Sauceysack)

    I used the OWC kit and it works perfectly ...

  • Edotho Level 1 Level 1 (0 points)
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    Jun 26, 2012 5:49 AM (in response to iVmichael)

    Thanks for the input iVmicael. Found some cheap RAM from other seller with the exact same RAM specs as the ones sold from apple stores. Will see if i get them later and check that out, dont really want to spend three times the prices on RAM, even though its the same hardware.

     

    Love apple, but hardware should still be the same.

     

    I will re-post later once I know what happens

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