Right now it has 2x 16GB 2RX4 PC4-2133P-RBB-11 in slots A1 and A2 (one for each CPU)

I want to upgrade to at least 64GB so can I just buy another two identical sticks?

Do they have to be exactly the same or if any HP 2133 16 GB kit with part number 726719-B21 compatible? I saw many very simillar sticks with a few different letters on ebay.

And is 4x 16GB optimal configuration? It would be in slots A1B1 and A2B2 right?

  • SilentDecode@alien.topBEnglish
    1·
    8 months ago

    so can I just buy another two identical sticks?

    Yes.

    Do they have to be exactly the same

    At least the same ranking (2Rx4), the same size and the same speed or faster.

    And is 4x 16GB optimal configuration?

    For one CPU, sure. For two CPUs, sure. It all depends in which slots you are sticking them. The proper RAM layout is on the inside of the lid. Check that for the proper installation of RAM.