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  • Mixing and matching RAM?

    My motherboard has 2 DIMM slots for DDR400 RAM, and is currently filled with 2 512MB sticks of Kingston 512MB RAM. I want to raise to 1.5GB, so the easiest thing to do would be to buy a new stick of 1GB RAM and use it along with one of my 512MB sticks.

    My question is, can I mix it up like that? I am planning on buying this Corsair RAM, which I can afford right now, I just need to know I can use it.

    Cheers.
    |TG| Lorian
    Member since 18th February 2006


  • #2
    Re: Mixing and matching RAM?

    If you want the absolute best possible performance out of your system it is recommended 'Not' to mix modules & speeds. There is no guarantee mixing modules will work, but saying that it rarely cause's problems nowadays. Check with your motherboard manufacturer.

    Also remember your sticks will default to the lowest speed and timings as all your RAM must run at the same speed. Is your Kingston 512 set 3200's ?

    I would personally recommend selling your Kingston on the Bay & buying a cheap set of 2gig. OCUK have some good deals on atm especially with their own make. You would probably get a pretty good price for your Kingston 2nd hand which would help pay for a 2gig upgrade
    [defense]

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    • #3
      Re: Mixing and matching RAM?

      Yeah, my Kingston sticks are PC3200s. I looked it up on the Kingston website out found what I have: 1GB 400MHz DDR Non-ECC CL3 (3-3-3) DIMM (Kit of 2) KVR400X64C3AK2/1G (PDF)

      I don't really know how to compare them, so the Corsair site says the latency is 3-3-3-8, and the Kingston site has a little chart showing how to interpret the model number.



      What can you make from that?

      By the way, this would only be a temporary solution until I get enough money for a second gig of the same Corsair.
      |TG| Lorian
      Member since 18th February 2006

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      • #4
        Re: Mixing and matching RAM?

        Type that into newegg.com and it should give you a clearer picture of what the tech specs are.

        Comment


        • #5
          Re: Mixing and matching RAM?

          Nice, I didn't think it'd turn up

          Kingston
          Corsair

          Things that are different:
          CAS: Corsair: 2, Kingston: 3
          Timing: Corsair: 2-3-3-6, Kingston: 3-3-3
          Voltage: Corsair: 2.75V, Kingston: 2.6V

          Thoughts?
          |TG| Lorian
          Member since 18th February 2006

          Comment


          • #6
            Re: Mixing and matching RAM?

            Well, if you were to buy the corsair, it would run at the kingston timings, which are slower. The voltage also may be a problem, unless you can control the voltage going to each DIMM slot. You would be better off buying all new ram.

            Now that I look at the links, 1gb to 2x512mb is a diffrence in speed, and the XMS is nice stuff, so don't bogg it down with old Kingston RAM.

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            • #7
              Re: Mixing and matching RAM?

              Bearing in mind that this is only a temporary fix until I can get some more XMS RAM, so running it at the slower speed wouldn't really be an issue for me.

              Unfortunately my motherboard only supports changing the voltage of both at the same time. Is 0.15V a lot to overclock the Kingston on? Or would I not be able to use them both together?
              |TG| Lorian
              Member since 18th February 2006

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              • #8
                Re: Mixing and matching RAM?

                I'm not sure how much overclocking you can do on RAM, but it should't be too much.

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                • #9
                  Re: Mixing and matching RAM?

                  DDR memories use a standard voltage of 2.5 V and we do not recommend that you go over 2.8 V
                  http://www.hardwaresecrets.com/article/152/5

                  Looks like it will be fine.
                  |TG| Lorian
                  Member since 18th February 2006

                  Comment


                  • #10
                    Re: Mixing and matching RAM?

                    If you fry the Kingston, you still have a gig and you plan to get more, although it looks like you won't even come close.

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                    • #11
                      Re: Mixing and matching RAM?

                      Originally posted by Acid View Post
                      although it looks like you won't even come close.
                      What do you mean? :\
                      |TG| Lorian
                      Member since 18th February 2006

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                      • #12
                        Re: Mixing and matching RAM?

                        That was a disclaimer :p

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                        • #13
                          Re: Mixing and matching RAM?

                          I don't understand :s
                          |TG| Lorian
                          Member since 18th February 2006

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                          • #14
                            Re: Mixing and matching RAM?

                            I was saying that if they say don't go over 2.8v and you have to get to 2.75v, then you should be fine.

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                            • #15
                              Re: Mixing and matching RAM?

                              Oh ok.

                              I am going to order it tomorrow when I get home from school. Assuming no one gives me reason not to.
                              |TG| Lorian
                              Member since 18th February 2006

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