Asus X556UJ - RAM Upgrade Guide

The Asus X556UJ laptop has two memory slots for RAM, but only one of these slots can be upgraded by the user. The maximum amount of memory the laptop can support is 12GB, with up to 8GB possible in the accessible slot. It uses DDR3 SDRAM as the memory type, and the RAM comes in a small form factor known as SODIMM. For best performance, the RAM should have a clock speed of 1600MHz, which corresponds to the PC3-12800 standard.
Asus X556UJ Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus X556UJ |
| Total memory slots | 2 (1 not upgradeable) |
| Maximum RAM | 12GB (up to 8GB in user accessible slot) |
| Memory type | DDR3 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 1600MHz (PC3-12800) |
| Voltage | Low - 1.35V (DDR3L / PC3L) |
| Number of pins | 204-pin |
FAQ about Asus X556UJ RAM
How much RAM can I add to my X556UJ laptop?
You can add up to 8GB in the single user-accessible slot. The laptop has 4GB soldered on the motherboard that can't be changed, so with an 8GB stick installed, you'll have 12GB total.
What type of RAM does the X556UJ use?
It uses DDR3 SODIMM memory - the smaller laptop-sized sticks. Make sure to get DDR3, not DDR4 or DDR5, as they're not compatible.
What speed RAM should I buy?
Get 1600MHz DDR3 (also labeled as PC3-12800). The laptop might work with faster RAM, but it'll just run at 1600MHz anyway, so no point spending extra.
Can I upgrade both RAM slots?
No, only one slot is accessible. The other has 4GB permanently soldered to the motherboard. This is why the max is 12GB (4GB fixed + 8GB upgrade).
Is it worth upgrading from 4GB to 12GB?
Definitely. Going from 4GB to 12GB makes a huge difference for multitasking, browser tabs, and general responsiveness. It's usually one of the best bang-for-buck upgrades you can do.