How Important is Matched Ram

Discussion in 'MacBook Pro' started by AppleTecFan, Feb 11, 2013.

?

Which RAM option

  1. 4GB+4GB

    16 vote(s)
    72.7%
  2. 8GB+2GB

    6 vote(s)
    27.3%
  1. AppleTecFan, Feb 11, 2013
    Last edited: Feb 13, 2013

    AppleTecFan macrumors 6502

    AppleTecFan

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    #1
    Looking at http://eshop.macsales.com/

    Wanting to purchase more ram for my current 2012 15" MacBook Pro, with at the moment 4GB of RAM.

    My choices for upgrading is purchasing a 4GB+4GB option leading to 8GB
    or
    Buying a 8GB stick and using the current 2GB stick in my MacBook equalling 2GB+8GB - But this I am not too sure about with mismatched RAM situation

    What would be the better solution

    How important is matched ram?

    UPDATE:
    I went out and bought a single 8GB stick from a local computer store, cost $70 including tax

    Supplied from Kingston

    [​IMG]
     
  2. snaky69 macrumors 603

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    #2
    Mismatched RAM loses dual channel ability which means a roughly 15% RAM performance hit. Whether that's noticeable is debatable, but there you have it.

    From there, it's your pick.
     
  3. AppleTecFan thread starter macrumors 6502

    AppleTecFan

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    #3
    Would you consider the decrease in performance worth it?
     
  4. Spink10 macrumors 601

    Spink10

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    #4
    Save money buy from Amazon.com
     
  5. Dweez macrumors 65816

    Dweez

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    #5
    I know it's not an option in your poll, but have you considered 2x8 gig sticks? It's "relatively cheap" and always good to use a matched set.
     
  6. AppleTecFan thread starter macrumors 6502

    AppleTecFan

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    #6
    Its not really in the question, I think 16GB is overkill but it is somewhat cheap
     
  7. Jon0149 macrumors newbie

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    #7
  8. Giuly macrumors 68040

    Giuly

    #8
  9. townsend2005 macrumors newbie

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    #9
    This is my personal opinion and experience:

    The mismatched ram thing is an internet-echo-box phenomenon.

    I hemmed and hawed over waiting to get a RAM upgrade, because I didn't want to just buy 4+4 when I really wanted 8+8 eventually. (that's "throwing away" my 2+2, then 4+4, right?)

    Because everybody on the internet says, "Don't forget to match your RAM!!" I'm not trying to dig on anyone in this thread -- I mean, really, almost everybody on the internet says this.

    Well, I finally just bought an 8GB stick and my computer performance has been GREAT. I maxed out my 4GB from the factory and my surfing, apps were slowed down, etc. Now I'm at 10GB with "mismatched RAM" and I still enjoy the performance boost months later.

    Don't worry about it at all.

    I'm on a early 2011 mbp 13", 4gb RAM from factory.

    Another thing, I remember so many people saying that 4GB would be enough for the casual user. I built and OC'ed a PC for video editing, so I know what heavy usage is, and I consider my mbp to be for casual use. 4GB simply wasn't enough to have MS Word, a couple of YouTube tabs open, email, and calendar. Clogged right up.

    I'd buy the 8GB - as long as it's compatible with your logic board, you won't regret.
     
  10. AppleTecFan thread starter macrumors 6502

    AppleTecFan

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    #10
    so did you see a reduction in performance after using the mismatched ram
     
  11. takeshi74 macrumors 601

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    #11
    Try reading the post you quoted again and you'll have your answer.
     
  12. AppleTecFan thread starter macrumors 6502

    AppleTecFan

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    #12
    Need a little more consensus, before I decide which to order


    Post away!
     
  13. AppleTecFan thread starter macrumors 6502

    AppleTecFan

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    #13
    Consider 16GB purchase, what do you guys think
     
  14. ultra7k macrumors 6502

    ultra7k

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    #14
    I've been using the 16GB Corsair Vengence kit since November and it's been great.
     
  15. AppleTecFan thread starter macrumors 6502

    AppleTecFan

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    #15
    And your macbook completely supports it, as the "official" max ram is 8gb
     
  16. robvas macrumors 68020

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    #16
    Get 4+4 unless you are really sure you're going to use 8GB. I have 8GB in my iMac and haven't used it all yet. I could get 16GB (4x4GB) but I'd rather spend the $75 on beer.
     
  17. Laco macrumors 6502

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    #17
    I recently bought 2X8 for my mid 2012 13 inch Pro. I also considered that it would be overkill but now I am using nearly 16 on a regular basis and the computer works much better. So I am very happy that I got 16. If you have the money I would go for 16 even if you don't need it right now, you may need it in the future especially if you intend to keep the computer for a few years.
     
  18. AppleTecFan thread starter macrumors 6502

    AppleTecFan

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    #18
    what do you even do on your computer to use up 16gbs of RAM
     
  19. Laco macrumors 6502

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    #19
    Mostly word processing and data analysis. I need to allocate about 5gbs to my statistics package and I need to have numerous very large word processing files open at one time, many of which contain large pictures. In addition I like to have dozen tabs open in Safari, have Skype and Itunes open. Right now this adds up to about 13.5gbs.
     
  20. kensic macrumors 6502

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    #20
    is there any proof of benchmark tests that show mismatched ram reduces performance?

    and the dual channel capacity that the #2 poster is talking about is you must use 2 channel at the same time....it doesn't say you must use two of the same company.

    i think its still a myth til proven wrong.


    current im using 6gb...(2gb from factory, 4gb from kingston)...no problems here. as far as performance, i cant tell. everything opens up so fast. and the factory set up opened stuff fast too.
     
  21. Micky Do macrumors 68000

    Micky Do

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    #21
    From my experience......

    Go for the 8GB plus the already installed 2 GB. If you want to go up to 16 GB one day, the option is there.

    My early 2009 Mini came with 1 GB of RAM. When I wanted to upgrade to Mountain Lion I asked the shop to install 4 GB, expecting them to remove the 1 GB and replace it. They simply installed the 4 GB along side the 1 GB, so now it has 5GB and it seems to work just fine.

    If I want to go up to 8 GB at some time in future I can just pop out the 1 GB and replace it.
     
  22. AppleTecFan thread starter macrumors 6502

    AppleTecFan

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    #22
    So you think I should just buy the 8gb and combine it with my 2gb
     
  23. kensic macrumors 6502

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    #23
    sure why not. and if more later if u still think u need 16gb.

    unless u find 16gb for cheap now.
     
  24. AppleTecFan, Feb 12, 2013
    Last edited: Feb 12, 2013

    AppleTecFan thread starter macrumors 6502

    AppleTecFan

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    #24
    I doubt I'd ever need 16gbs, I still dont know what to get

    I really want to know what happens if I dont have matched RAM
     
  25. AppleTecFan thread starter macrumors 6502

    AppleTecFan

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    #25
    Talked to a OWC sales rep, gave me the answer
    sounds correct to me
     

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