Asus VivoBook S551LN - RAM Upgrade Guide

The Asus VivoBook S551LN 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 of that being installable in the user-accessible slot. The type of memory used is DDR3 SDRAM, and it comes in a small outline dual inline memory module (SODIMM) format, which is common for laptops. For best performance, the recommended RAM clock speed is 1600MHz, also referred to as PC3-12800.
Asus VivoBook S551LN Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus VivoBook S551LN |
| 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 VivoBook S551LN RAM
How much RAM can I add to my S551LN 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 maximum total is 12GB.
What type of memory do I need for this laptop?
You need DDR3 SODIMM (the smaller laptop-sized modules). Make sure it's 1600MHz speed, also labeled as PC3-12800.
Can I upgrade both memory slots?
No, only one slot is upgradeable. The other slot has memory permanently attached to the motherboard, so you're stuck with whatever came from the factory in that one.
Will faster RAM work, like 1866MHz or 2133MHz?
It'll probably work but will run at 1600MHz anyway. The system will downclock faster memory to match what it supports, so you're just wasting money on the extra speed.
Is it worth upgrading from 4GB to 12GB?
Definitely worth it if you multitask, use Chrome with lots of tabs, or do any photo/video editing. The jump from 4GB to 12GB makes a huge difference in everyday use.