Upgrading RAM

[Jason1975]

I want to upgrade or add additional RAM to my desktop.  I have the original 16gb.  What I cannot find online is the exact RAM that will work with this computer.  For example, on New Egg I cannot find the 875-0xxx model.  Also what is the max RAM I can add?  32gb that absolute max?   What are the RAM options.  Is this the correct RAM? https://www.newegg.com/hyperx-16gb-288-pin-ddr4-sdram/p/N82E16820104748

Product Number: 4NM65AA#ABA

[banhien]

@Jason1975 

What is your Omen by HP Obelisk Desktop 875-0xxx  ? For example

                       OMEN by HP Obelisk Desktop PC - 875-003la

Probably your machine uses same motherboard and its specs is very close to the above machine therefore I use that machine above to answer your question.

For RAM

• Dual channel (1 DIMM per channel) memory architecture
• Two DDR4 UDIMM (288-pin) sockets
• Supports PC4-21300 (DDR4-2666)
• Supports 8 GB and 16 GB DDR4 UDIMMs
• Supports up to 4 GB on 32-bit systems

  note:

  32-bit systems cannot address a full 4.0 GB of memory.

• Supports up to 32 GB (unbuffered) on 64-bit computers.

  note:

  Maximum memory shown reflects the capability

You can use a tool called CPU-Z to find out what is its current RAM and buy same specs with larger capacity or use the following compatible RAM (yes, 32GB is the max. You can install 3200MHz RAM but machine will run at 2666MHz)

            https://uk.crucial.com/memory/ddr4/ct2k16g4dfd8266/ct17385360

            https://uk.crucial.com/memory/ddr4/bl2k16g32c16u4r/ct17385330

Regards.