HP 255 G3
Yes. One slot, up to 4 GB seen working.
It takes DDR3-1333 laptop-size sticks (SO-DIMM).
- Slots
- 1 SO-DIMM slot
- Type
- DDR3-1333 204-pin SO-DIMM
- Most seen working
- 4 GB in two or more machines; one machine runs 8 GB
- Firmware says
- 4 GB maximum
- How sure
- 10 of 14 reports show this layout
Worked out from 14 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
Batteries in these laptops report 31 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 12 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the HP 255 G3?
Yes. One slot, up to 4 GB seen working. It takes DDR3-1333 laptop-size sticks (SO-DIMM).
What type of RAM does the HP 255 G3 use?
DDR3-1333 laptop-size sticks (SO-DIMM, 204-pin).
How much RAM can the HP 255 G3 take?
Machines in the reports run up to 4 GB, and one runs 8 GB. That matches the 4 GB maximum the firmware reports.
What battery does the HP 255 G3 use?
Batteries in these laptops report 31 Wh, going by 12 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 255 G3.