HP ProBook 640 G8 Notebook PC
Yes. 2 slots, up to 16 GB seen working.
It takes DDR4-3200 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-3200 260-pin SO-DIMM
- Most seen working
- 16 GB in two or more machines; one machine runs 64 GB
- Firmware says
- 32 GB maximum (often wrong, so we show what machines run)
- SSD slots
- At least 1 M.2 SSD slot listed by the firmware
- How sure
- 22 of 22 reports show this layout
Worked out from 22 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
Batteries in these laptops report 45 Wh.
That is the design capacity the batteries themselves report, and the label can read 1 to 3 Wh higher. Other pack sizes may have shipped, so check the capacity printed on yours before you order.
From 22 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the HP ProBook 640 G8 Notebook PC?
Yes. 2 slots, up to 16 GB seen working. It takes DDR4-3200 laptop-size sticks (SO-DIMM).
What type of RAM does the HP ProBook 640 G8 Notebook PC use?
DDR4-3200 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the HP ProBook 640 G8 Notebook PC take?
Machines in the reports run up to 16 GB, and one runs 64 GB. The firmware reports a maximum of 32 GB, a figure that is often wrong.
Does the HP ProBook 640 G8 Notebook PC have an M.2 SSD slot?
Yes. The firmware lists at least 1 M.2 SSD slot, in 22 reports. Some firmware leaves a slot out, so there may be more.
What battery does the HP ProBook 640 G8 Notebook PC use?
Batteries in these laptops report 45 Wh, going by 22 reports. Other pack sizes may have shipped, so check the capacity printed on yours.
Is this my laptop?
Check the model name on the label underneath. It should read ProBook 640 G8 Notebook PC.