Do I have free RAM-slots in my MacBook?

Discussion in 'MacBook' started by Ramius, Sep 7, 2010.

  1. Ramius macrumors 6502

    Nov 2, 2008
    I´ve just started using my Macbook unibody from 2008 alot more than I used to.

    I see now that lagging occurs more often than before, because I run alot of programs. So Im thinking of buying more RAM. But just a little bit more.

    I could open my machine and look, but I thought it would be easier to ask first. Are there free slots in the MAcbook?

    Do I have to change the ones that are already there, out with some new, or can I buy more RAM and put them in some available slots there?

    So what kind of Ram does the machine use anyway? I see OSX tells me its DDR3 and 1067 mhz. But there are more to RAM naming than this. Usually I need to know something like "PC" and a bunch of numbers right?
  2. alust2013 macrumors 601


    Feb 6, 2010
    On the fence
    You won't have open slots, you'll simply have to replace the RAM you already have. I would get 4GB from OWC or It's PC3-8500 200-pin 1067MHz DDR3 SODIMM memory, and you'll want a 2x2GB kit

    Edit, I lied, it's 204-pin
  3. cubeeggs macrumors member

    Dec 1, 2009
    It’s extremely unlikely that you’ll have any free RAM slots unless someone’s stolen some of your memory because there are only two slots and they both come preloaded, but you can check by choosing “About This Mac” in the Apple menu, clicking “More info…” and choosing “Memory” on the left.
  4. mrsir2009 macrumors 604


    Sep 17, 2009
    Melbourne, Australia
  5. Ramius thread starter macrumors 6502

    Nov 2, 2008
    It´s got two gigs.

    So theres only two slots in the Macbook unibody? Also known as Macbook Pro.

    That sucks. It kind of makes me not wanting to upgrade, cause I will be throwing away perfectly good ram.
  6. iThinkergoiMac macrumors 68030

    Jan 20, 2010
    You could always sell the RAM. It's not Mac-specific, it'll work in any computer that takes that specification...
  7. Ramius thread starter macrumors 6502

    Nov 2, 2008
    For upgrading, does any kind of DDR3 work? Or does it have to be 1067mhz?
    Cause some of these chips looks very very large.
  8. Messy macrumors 6502

    Sep 5, 2010
    DDR2 Only i do believe.
  9. GGJstudios macrumors Westmere


    May 16, 2008
    Type of RAM slots: 2 - 204-pin PC3-8500 (1066 MHz) DDR3 SO-DIMM
    Maximum RAM: 6.0 GB (Actual) 4.0 GB (Apple)

    You can find specs on all Apple products with Mactracker
  10. unixperience macrumors regular

    Jul 21, 2010
    from other threads I've read you can get any speed ram that is greater than or equal to 1066, if it's faster it just gets scaled down, some have said the faster ones also run a tad warmer

    just FYI you can open system profiler then click on the tab under hardware>memory
    it tells you what you have in there currently (All mac laptops only have 2 slots)

    alust2013 gave the best info the macbook is pc3-8500 that will get you ddr3 at the proper speed, you should also note, that it's just a naming convention, for instance if you said mom or used her actual name, its the same person pc3-8500 is the same as ddr3 1066 one other thing to note is the speed (not always listed) but its typically CL7 or CL9 I believe you want CL7 its a bit faster than CL9 (someone please correct me if im wrong)

    if you have an ALUMINUM unibody, theres a few reports of getting 8gb of ram in there, but it's a hit or miss kind of thing, some brands work some don't
    I don't know if you are opposed to ebay, but I got 4gb of ram from someones MBP (they upgraded to 8gb) for only 40 bucks. it was that HYNIX brand that apple uses, so no compatibility issues
  11. Blondie :) macrumors 6502a

    Blondie :)

    May 12, 2010
    Prescott, AZ
    There was a post on here not too long ago of a guy who managed to get 8 gigs in his polycarbonate body. He had to change some other things, but it worked :p
  12. Covart Guest

    Aug 15, 2010
    This is not exactly correct and can confuse. You can use one chip that is rated faster, as long as the other chip is the correct speed. Using 2 chips rated faster than 1067 will not work in conjunction. The Mac will just sit at the grey screen with the Apple logo and spin forever. I do not recommend using chips rated with faster bus speeds.
    For the OP, buy 2x2GB PC3-8500. G-Skill, Mushkin are good brands.
  13. unixperience macrumors regular

    Jul 21, 2010
    thanks for the info!
  14. KingNush macrumors newbie

    Jul 25, 2010
    US NC
    Go to have a download a system check and it will tell you alot about your mac (including free slots in your macbook)

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