ASUS X751SJ

Laptop, from 2015 6 hardware reports
Memory
Up to 4 GB
2 laptop-size slots
SSD and charger
Coming next
Checked from separate sources
Upgradable

Yes. 2 slots, up to 4 GB seen working.

It takes DDR3-1066 laptop-size sticks (SO-DIMM).

Slots
2 SO-DIMM slots
Type
DDR3-1066 204-pin SO-DIMM
Most seen working
4 GB in two or more machines; one machine runs 8 GB
Firmware says
8 GB maximum (often wrong, so we show what machines run)
How sure
6 of 6 reports show this layout
See 8 GB DDR3-1066 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 6 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.

2 laptop-size slots
Illustration

Questions

Can I upgrade the RAM in the ASUS X751SJ?

Yes. 2 slots, up to 4 GB seen working. It takes DDR3-1066 laptop-size sticks (SO-DIMM).

What type of RAM does the ASUS X751SJ use?

DDR3-1066 laptop-size sticks (SO-DIMM, 204-pin).

How much RAM can the ASUS X751SJ take?

Machines in the reports run up to 4 GB, and one runs 8 GB. The firmware reports a maximum of 8 GB, a figure that is often wrong.

Is this my laptop?

Check the model name on the label underneath. It should read X751SJ.