Asus VivoBook V551LA - RAM Upgrade Guide

The Asus VivoBook V551LA has two memory slots for RAM, but only one of these can be upgraded by the user. The laptop supports a maximum memory capacity of 12GB, with up to 8GB possible in the user-accessible slot. It uses DDR3 SDRAM as the memory type, which comes in a small outline dual inline memory module (SODIMM) format. For optimal performance, a RAM clock speed of 1600MHz, also referred to as PC3-12800, is recommended.
Asus VivoBook V551LA Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus VivoBook V551LA |
| 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 V551LA RAM
How much RAM can I add to my VivoBook V551LA?
You can add up to 8GB in the single accessible slot. The laptop has 4GB soldered on the motherboard that can't be changed, plus one empty slot for upgrades, giving you a maximum of 12GB total.
What type of memory does the V551LA use?
It uses DDR3 SODIMM modules - the smaller laptop-sized memory sticks. Make sure to get DDR3, not DDR4 or DDR5, as they won't fit or work.
What speed RAM should I buy for this laptop?
Get 1600MHz DDR3 (also labeled as PC3-12800). The laptop will work with slower speeds like 1333MHz if that's what you have, but 1600MHz is what it's designed for.
Can I upgrade both memory slots?
No, only one slot is accessible for upgrades. The other slot has 4GB permanently soldered to the motherboard, so you're stuck with that 4GB base amount.
Will 16GB total work if I add a 12GB stick?
No, the maximum the system supports is 12GB total. Even if you somehow found a 12GB stick, you'd still be limited to 8GB in the upgradeable slot due to the laptop's limitations.
Is upgrading from 4GB to 12GB worth it?
Adding an 8GB stick to reach 12GB total makes a huge difference for multitasking, running multiple browser tabs, and general performance. It's usually the best bang-for-buck upgrade for this model.