HP t640 Thin Client
Mini PC, from 2019 4 hardware reports
Memory
Up to 32 GB
2 laptop-size slots
Drives and power
Coming next
Checked from separate sources
Upgradable
Yes. 2 slots, up to 32 GB seen working.
It takes DDR4-2400 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-2400 260-pin SO-DIMM
- Most seen working
- 32 GB in two or more machines
- Firmware says
- 32 GB maximum
- How sure
- 4 of 4 reports show this layout
See 16 GB DDR4-2400 SO-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.
2 laptop-size slots
Illustration Questions
Can I upgrade the RAM in the HP t640 Thin Client?
Yes. 2 slots, up to 32 GB seen working. It takes DDR4-2400 laptop-size sticks (SO-DIMM).
What type of RAM does the HP t640 Thin Client use?
DDR4-2400 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the HP t640 Thin Client take?
Machines in the reports run up to 32 GB. That matches the 32 GB maximum the firmware reports.
Is this my desktop?
Check the model name on the front or the label of the case. It should read t640 Thin Client.