HP Elite Tower 800 G9 Desktop PC
Desktop, from 2023 2 hardware reports
Memory
Up to 64 GB
4 full-size slots
SSD
2+ M.2
At least 2 M.2 SSD 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. 4 slots, up to 64 GB seen working.
It takes DDR5-4400 full-size sticks (DIMM).
- Slots
- 4 DIMM slots
- Type
- DDR5-4400 288-pin DIMM
- Most seen working
- 64 GB; one machine runs 64 GB
- Firmware says
- 128 GB maximum
- SSD slots
- At least 2 M.2 SSD slots listed by the firmware
- How sure
- 2 of 2 reports show this layout
See 16 GB DDR5-4400 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.
4 full-size slots
Illustration Questions
Can I upgrade the RAM in the HP Elite Tower 800 G9 Desktop PC?
Yes. 4 slots, up to 64 GB seen working. It takes DDR5-4400 full-size sticks (DIMM).
What type of RAM does the HP Elite Tower 800 G9 Desktop PC use?
DDR5-4400 full-size sticks (DIMM, 288-pin).
Does the HP Elite Tower 800 G9 Desktop PC have an M.2 SSD slot?
Yes. The firmware lists at least 2 M.2 SSD slots, in 2 reports. Some firmware leaves a slot out, so there may be more.
Is this my desktop?
Check the model name on the front or the label of the case. It should read Elite Tower 800 G9 Desktop PC.