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Replacing 2GB PC3-12800S with 4GB PC3-8500S in laptop

Hello, new to Tom's Hardware, seems like a great place to find knowledgeable answers. So, I recently bought a new laptop (HP m6-1035dx) and want to upgrade the RAM. I have a 4GB module from an old laptop (also HP) that I would like to use to replace the 2GB module in the new one. Here is my question... the new laptop has 2 RAM sticks (one Hynix 4GB 2Rx8 PC3-12800S-11-11-F3 and one Samsung 2GB 1Rx8 PC3-12800S-11-10-ZZZ (the one I want to replace)). The stick that I have lying around is a Hynix 4GB 2Rx8 PC3-8500S-7-10-F2. Am I better off with the original 6GB because the speeds are the same or would it be better to have 8GB even though the speeds would be different? Thank you.
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More about replacing 12800s 8500s laptop
  1. Best answer
    The laptop may not allow you to mix 12800 with 8500 at all.

    However, if it does work you would have to figure out how much you really need the extra 2 GBs. Most people probably wouldn't notice the gain of 2. Most people probably also wouldn't notice the loss of speed from both dropping to 8500 either.

    I would just stick with what is already in there. Either that or get a second copy of the Hynix one.
  2. Best answer selected by diamonddisc89.
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