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Maximum Usable RAM on a 2.13 Ghz MacBook
Posted on 2011-03-04
I have a white 2.13 Ghz MacBook (Model A1181) that I bought in 2009. It came w/ 2 Gig of RAM. I know that even though Apple states the maximum RAM is 4 Gigs, the actual max is 6 Gigs. So I purchased a 4 Gig chip to bring my total RAM to 5 Gigs. One of my friends said I should not have spent the money b/c he had read somewhere that the MacBooks can only effectively address 4 Gigs or less of physical RAM.
I have not been able to confirm this. I would think that since my MacBook has an Intel Core 2 Duo CPU and is running a 64-bit OS (10.6.6) then I should be able to install & utilize 5 or 6 Gigs of RAM.
Can someone confirm or refute this?
I have not been able to confirm this. I would think that since my MacBook has an Intel Core 2 Duo CPU and is running a 64-bit OS (10.6.6) then I should be able to install & utilize 5 or 6 Gigs of RAM.
Can someone confirm or refute this?
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Provided you are running OS X you should be able to see that much RAM. I would say install it and see what is recognized. If you only see 4 GB then that amount is all that will be recognized by the OS and system. The OS supports 16 GB max but the hardware might only be 4 GB.
OK. But can someone explain why the hardware can only handle 4 gigs? The MB Pro can handle 8 gigs. I know mine is not a pro, but System Profiler correctly identifies 5 Gigs of RAM. So why would it not be recognized??
I found this post, although it's more than 2 years old.
http://mobile.computerworld.com/device/article.php?CALL_URL=blogs.computerworld.com/nvidia_says_new_macbook_pro_can_do_8gb_of_ram
http://mobile.computerworld.com/device/article.php?CALL_URL=blogs.computerworld.com/nvidia_says_new_macbook_pro_can_do_8gb_of_ram
Wow, I found another post that is just one day old claiming that you can put in 8 Gigs into the late 2008 model MacBooks if you use the right firmware. They say this applies to MacBook 5,1 and I have the MacBook 5,2. Wonder if it would work on mine? Would be great to have 8 Gigs since I use VMWare Fusion extensively.
http://blog.macsales.com/9102-secret-firmware-lets-late-08-macbooks-use-8gb
http://blog.macsales.com/9102-secret-firmware-lets-late-08-macbooks-use-8gb
The good news is that your model actually supports up to 6GB in a 2GB/4GB configuration. Apple will regularly release "maximum" specs based on testing that happened during development and will not update those specs as newer technology comes out.
For the future, a great place to see this kind of information is everymac.com. Here is the page for your laptop: http://www.everymac.com/systems/apple/macbook/stats/macbook-core-2-duo-2.13-white-13-mid-2009-nvidia-specs.html
For the future, a great place to see this kind of information is everymac.com. Here is the page for your laptop: http://www.everymac.com/systems/apple/macbook/stats/macbook-core-2-duo-2.13-white-13-mid-2009-nvidia-specs.html
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