ASUS P53SJ

Laptop, from 2011 2 hardware reports
Memory
Up to 12 GB
2+ laptop-size slots
SSD and charger
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. At least 2 slots, up to 12 GB seen working.

It takes DDR3-1333 laptop-size sticks (SO-DIMM).

Slots
At least 2 SO-DIMM slots
Firmware lists
4 sockets, but no machine in the reports had more than 2 filled. Many laptops list sockets that aren't there, and some workstations hide two slots under the keyboard.
Type
DDR3-1333 204-pin SO-DIMM
Most seen working
12 GB; one machine runs 12 GB
Firmware says
16 GB maximum
How sure
2 of 2 reports show this layout
See 4 GB DDR3-1333 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 2 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 P53SJ?

Yes. At least 2 slots, up to 12 GB seen working. It takes DDR3-1333 laptop-size sticks (SO-DIMM).

What type of RAM does the ASUS P53SJ use?

DDR3-1333 laptop-size sticks (SO-DIMM, 204-pin).

Is this my laptop?

Check the model name on the label underneath. It should read P53SJ.

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