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The Thinkpad Lenovo P1 with the Xeon processor (part number 20MDCTO1WW) comes with these RAM options:

  • 8GB DDR4 2666MHz SODIMM
  • 8GB DDR4 2666MHz ECC SODIMM
  • 16GB DDR4 2666MHz SODIMM
  • 16GB(8+8) DDR4 2666MHz SODIMM
  • 16GB DDR4 2666MHz ECC SODIMM
  • 16GB(8+8) DDR4 2666MHz ECC SODIMM
  • 32GB(16+16) DDR4 2666MHz SODIMM
  • 32GB DDR4 2666MHz SODIMM
  • 32GB(16+16) DDR4 2666MHz ECC SODIMM
  • 64GB(32+32) DDR4 2666MHz SODIMM

The fact that there are 8+8, 16+16 and so on options present, makes me believe it has two slots for RAM. I'm thinking of getting the one with 16GB DDR4 2666MHz ECC SODIMM; Would I be able in the future to upgrade to 32GB by adding a second SODIMM?

My question comes from my vague recollection that once upon a time you needed to get matched pairs of ram sticks and they would work individually but not (or not very well) with other non-matched sticks.

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  • "P1" is a marketing name, not a true model number. Please obtain that necessary information from support.lenovo.com/us/en/solutions/ht077589 or from the serial number plate underneath the ThinkPad, and when you have it, come back her and click on edit above at left to add it to your original question.
    – K7AAY
    Oct 19, 2018 at 23:35
  • @K7AAY: I see only one P1 in the list: P1 (Type 20MD, 20ME) Laptop (ThinkPad). I haven't bought the P1 yet, so, I can't search by serial number.
    – Pablo Fernandez
    Oct 20, 2018 at 11:54
  • @K7AAY: I gave you all the information Lenovo shares about the computer.
    – Pablo Fernandez
    Oct 22, 2018 at 15:53

1 Answer 1

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Yes. The manual for the Lenovo 20MDCTO1WWENGB2 does show two DIMM slots for memory modules, and it states on pp. 65-66 memory modules are a user-changeable item.

Different PC designs require different memory configurations for optimal performance; one, two, three, or four memory modules can be called for.

Page 61 of the aforementioned manual

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