Asus VivoBook V551LB - RAM Upgrade Guide

The Asus VivoBook V551LB has two memory slots for RAM, but only one of them can be upgraded by the user. The laptop supports a maximum memory capacity of 12GB, with up to 8GB possible in the slot that can be accessed for upgrades. It uses DDR3 SDRAM as the memory type and requires a SODIMM form factor, which is a compact design commonly used in laptops. For optimal performance, the recommended RAM clock speed is 1600MHz, also referred to as PC3-12800.
Asus VivoBook V551LB Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus VivoBook V551LB |
| 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 V551LB RAM
How much RAM can I add to my VivoBook V551LB?
You can add up to 8GB in the single accessible slot. The laptop has 4GB soldered on that can't be changed, so with an 8GB stick installed, you'll have 12GB total.
What type of RAM does the V551LB use?
It uses DDR3 SODIMM memory - the smaller laptop-sized sticks. Make sure to get DDR3, not DDR4 or DDR5, as they won't fit or work.
What speed RAM should I get?
Go with 1600MHz (also labeled as PC3-12800). The system will work with slower speeds but you won't get the best performance.
Can I upgrade both RAM 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.
Is it worth upgrading from 4GB to 12GB?
Definitely. Going from 4GB to 12GB makes a huge difference for multitasking, having lots of browser tabs open, and running heavier programs. It's one of the best upgrades you can do for this laptop.
Can I just add a 4GB stick instead of 8GB?
Yes, you can add a 4GB stick to get 8GB total, which is still a decent upgrade from the base 4GB. But since you can go up to 8GB in that slot, might as well max it out if your budget allows.