Ram upgrade

busu3
busu3 Member Posts: 552 Seasoned Specialist WiFi Icon
edited November 2023 in 2020 Archives
I want to upgrade the RAM in my laptop to 32 gb. Currently its 1 slot used of 2(8gb). What ram should I buy? Model:PH315-51.

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  • aphanic
    aphanic Member Posts: 959 Seasoned Specialist WiFi Icon
    Answer ✓
    Sure, for memory to work in X channel (X being dual, quad, etc.) they need to match. By matching we mean that they have to have the same timings (and sub-timings) at a given profile.

    For example, memories that have different CAS latencies may not work in dual channel mode, or they may work at a lower speed in which they're both working with the same timing. Maybe they don't even work at all in the computer, who knows (even if memory controllers nowadays are pretty accommodating).

    That's why @xapim recommends getting a matched set (I second those brands, I've had good experience with matched HyperX memory over the years, even DDR2!). One of those kits that are sold by pairs of sticks, because you're guaranteed that they'll work together in sync no matter what. You're not guaranteed they'll work in your computer of course, if there's some incompatibility for whatever reason, but if they're supported, they'll work. Otherwise it's a risk, they may very well work, they may not; many of the juicy details of the chips themselves are not available for public consumption.

    Hell, I've heard of cases where someone goes and buys the same stick, twice (single packed) and it ends up not working in dual channel! It's insane!

    That's why I even suggested in that guide getting the same stick as you have, second hand, it'd be the same part so you'd already know it'd work, but nothing beats a brand new set of sticks.

    As for whether you can add a 16 GB stick having one of 8 GB installed, sure, you'd end up with 24 GB raw (I'm sure part would be hardware reserved) but as long as they compatible, it'll work.
  • xapim
    xapim ACE Posts: 7,253 Pathfinder
    edited August 2020 Answer ✓
    busu3 as i already stated above for proper dual channel u need either 2x8 or 2x16 matching exactly same size/clock/cl and preferably brand the lower the cl the better also hyperx has xmp 2.0 jedec built in it will auto boost when needed


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