HP OMEN 25L Desktop GT12-0xxx
Desktop, from 2020 4 hardware reports
Memory

Up to 16 GB
4 full-size slots
Drives and power
Coming next
Checked from separate sources
Upgradable
Yes. 4 slots, up to 16 GB seen working.
It takes DDR4-2933 full-size sticks (DIMM).
- Slots
- 4 DIMM slots
- Type
- DDR4-2933 288-pin DIMM
- Most seen working
- 16 GB in two or more machines; one machine runs 32 GB
- Firmware says
- 64 GB maximum (often wrong, so we show what machines run)
- How sure
- 4 of 4 reports show this layout
See 4 GB DDR4-2933 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 4 hardware reports of this desktop. Sources and method. Updated 9 Nov 2026.

4 full-size slots
Illustration Questions
Can I upgrade the RAM in the HP OMEN 25L Desktop GT12-0xxx?
Yes. 4 slots, up to 16 GB seen working. It takes DDR4-2933 full-size sticks (DIMM).
What type of RAM does the HP OMEN 25L Desktop GT12-0xxx use?
DDR4-2933 full-size sticks (DIMM, 288-pin).
How much RAM can the HP OMEN 25L Desktop GT12-0xxx take?
Machines in the reports run up to 16 GB, and one runs 32 GB. The firmware reports a maximum of 64 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 25L Desktop GT12-0xxx.
More in the HP OMEN
- OMEN 30L Desktop GT13-1xxx
- OMEN 30L Desktop GT13-0xxx
- OMEN by Desktop PC 880-p1xx
- OMEN by Obelisk Desktop 875-0xxx
- OMEN by 40L Gaming Desktop GT21-0xxx
- OMEN by Desktop PC 880-p0xx
- OMEN by Obelisk Desktop 875-1xxx
- OMEN by Desktop PC 870-2XX
- OMEN 25L Desktop GT12-1xxx
- OMEN by HP Desktop PC 880-p1xx
- OMEN by HP Obelisk Desktop 875-0xxx