HP OMEN by HP Obelisk Desktop 875-0xxx

Desktop, from 2019 2 hardware reports
Memory
Up to 16 GB
2 full-size slots
Drives and power
Coming next
Checked from separate sources

Only 2 machines reported so far, so this answer rests on few examples. Check the label or open the panel before you buy.

Upgradable

Yes. 2 slots, up to 16 GB seen working.

It takes DDR4-2666 full-size sticks (DIMM).

Slots
2 DIMM slots
Type
DDR4-2666 288-pin DIMM
Most seen working
16 GB in two or more machines
Firmware says
32 GB maximum (often wrong, so we show what machines run)
How sure
2 of 2 reports show this layout
See 8 GB DDR4-2666 DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 2 hardware reports of this desktop. Sources and method. Updated 9 Nov 2026.

2 full-size slots
Illustration

Questions

Can I upgrade the RAM in the HP OMEN by HP Obelisk Desktop 875-0xxx?

Yes. 2 slots, up to 16 GB seen working. It takes DDR4-2666 full-size sticks (DIMM).

What type of RAM does the HP OMEN by HP Obelisk Desktop 875-0xxx use?

DDR4-2666 full-size sticks (DIMM, 288-pin).

How much RAM can the HP OMEN by HP Obelisk Desktop 875-0xxx take?

Machines in the reports run up to 16 GB. The firmware reports a maximum of 32 GB, a figure that is often wrong.

Is this my desktop?

Check the model name on the front or the label of the case. It should read OMEN by HP Obelisk Desktop 875-0xxx.

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