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  1. #1

    Default weird ram configuration?

    Currently I have 2x2GB and I'm looking to upgrade.

    Would it be ok for me to get an additional 2x8GB alongside my existing 2x2GB, or do they all have to match?

    My mobo: http://www.asus.com/Motherboards/P7P55D/

  2. #2
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    Default Re: weird ram configuration?

    Are you using 64 bit?? If you're not, windows wont use / recognise the extra ram. Dont think the ram has to match, but if it supports dual channel, it wont run in dual channel mode

  3. #3

    Default Re: weird ram configuration?

    Quote Originally Posted by Speedy Gonzales View Post
    Are you using 64 bit?? If you're not, windows wont use / recognise the extra ram. Dont think the ram has to match, but if it supports dual channel, it wont run in dual channel mode
    Yeah of course, Win7 64bit.

    Mobos specs state:
    4 x DIMM, Max. 16 GB, DDR3 2200(O.C.)*/1600/1333/1066 Non-ECC,Un-buffered Memory
    Dual Channel memory architecture
    Supports Intel® Extreme Memory Profile (XMP)

    What exactly does dual channel do? Do I need it?

  4. #4
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    Default Re: weird ram configuration?

    This. Up to you, whether you think it's better or not

  5. #5
    amateur expert dugimodo's Avatar
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    Default Re: weird ram configuration?

    It's best to match the type and speed if possible but as long as each pair matches they can be different sizes and still work OK and in dual channel mode as well so yes you can do this.

    However if it doesn't work the difference between 16 & 20g of RAM is not something most users could notice, in fact 8 is still plenty in most cases which is why I've stuck with it. Next build in a year or two will probably have 16 and I expect that to be enough for a long time.
    Ryzen 2700X, 16Gb DDR4RAM, 512GB M.2 NVME SSD, MSI GTX1070

  6. #6
    Mature Linux nerd Rod J's Avatar
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    Default Re: weird ram configuration?

    Quote Originally Posted by acheron4778 View Post
    Mobos specs state:
    4 x DIMM, Max. 16 GB, DDR3 2200(O.C.)*/1600/1333/1066 Non-ECC,Un-buffered Memory
    Dual Channel memory architecture
    Supports Intel® Extreme Memory Profile (XMP)
    Doesn't "Max. 16GB" mean the motherboard can't take more than 16Gb total? So you couldn't do 20Gb anyway?
    "Oh Ubuntu, you are my favorite Linux-based operating system!" - Sheldon Cooper, The Big Bang Theory.

  7. #7
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    Default Re: weird ram configuration?

    Thats true, you'll have to replace the 2x2 with 4x4 GB sticks. It may not work if you put 2x8 GB sticks on it. Each slot may only support up to 4 GB (not 8)

  8. #8

    Default Re: weird ram configuration?

    Quote Originally Posted by Rod J View Post
    Doesn't "Max. 16GB" mean the motherboard can't take more than 16Gb total? So you couldn't do 20Gb anyway?



    Well **** I don't know how I didn't notice that.
    Thanks for the heads up.

    Am I likely to see any difference between 1600 or 1333?

  9. #9
    Senior Member Slankydudl's Avatar
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    Default Re: weird ram configuration?

    Not really, most people cant tell the difference between 800mhz and 2400mhz

  10. #10
    Computer "Specialist" Agent_24's Avatar
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    Default Re: weird ram configuration?

    Unless you're running a server and virtualising several OS at once you don't need 20GB of RAM...
    Non-system disk or disk error. Replace and strike any key when ready.

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