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4gb ram+2gb ram is it possible?

Hey guys i'm planning on building my first pc. I wanted to ask if I could use my old 2gb stick from my old pc. So in total I have 6gb ram (buying 4gb and adding 2gb from my older pc)
Would this improve performance? OR should I only get a 2gb stick and add my old 2gb to it, so I have 4gb total.
If it is possible, is there any difference between 4gb and 6gb? I'll be only gaming on it so no editing/recording.

Here is my build: http://azerty.nl/winkelmandje/winkelmandje/?legen=1&product%5B558427%5D=1&product%5B582385%5D=1&product%5B385042%5D=1&product%5B621182%5D=1&product%5B405099%5D=1&product%5B567558%5D=1

Thanks for reading :)
8 answers Last reply Best Answer
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  1. it depends do you know what kind of ram the old system used? there's a difference between ddr2 and ddr3
  2. HopelessNoob said:
    it depends do you know what kind of ram the old system used? there's a difference between ddr2 and ddr3


    tbh, I have no idea :l
    How do I check that?
    And what if it is ddr2? Is it bad?
  3. Best answer
    ddr2 and ddr3 have different sockets you can try putting it in but if the little notch isn't in the right place then you can't use it
    but if it is ddr3 then i would the new 4gb ram into slot 1 and the 2gb ram into slot 2
  4. Thank you for helping me out :)
    I'll check if it is ddr2 and ddr3 and choose what ram to get.
    Regards
  5. Yusef, if its ddr3 you would be better using another 2gb stick, as then the 4gb would be operating in dual channel mode, much faster than 6gb in single channel across two sticks.

    Unfortunately there is no garuntee another stick will work with your existing one unless you can buy the exact same model, While other brands models etc should theoretically work somethimes they just don't, for no reason at all.
  6. drtoast said:
    Yusef, if its ddr3 you would be better using another 2gb stick, as then the 4gb would be operating in dual channel mode, much faster than 6gb in single channel across two sticks.

    Unfortunately there is no garuntee another stick will work with your existing one unless you can buy the exact same model, While other brands models etc should theoretically work somethimes they just don't, for no reason at all.


    So if my ram is ddr2, i'm not using it.
    So getting 2x2gb sticks would be better instead of 1x4gb right?
  7. 2x2 would be better if your going to buy both new. Its fairly difficult to get the same model of RAM much more than 3 years after original purchase. So its best to buy them in matching pairs during the first buy.
  8. drtoast said:
    2x2 would be better if your going to buy both new. Its fairly difficult to get the same model of RAM much more than 3 years after original purchase. So its best to buy them in matching pairs during the first buy.


    Ok thank you very much :)
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