Asus VivoBook X512FJ - RAM Upgrade Guide
The Asus VivoBook X512FJ 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 20GB, with up to 16GB allowed in the user-accessible slot. It uses DDR4 SDRAM as the memory type, and the form factor is SODIMM, which is a compact type of memory module designed for laptops. For best performance, the recommended RAM clock speed is 2666MHz, also referred to as PC4-21300.
Asus VivoBook X512FJ Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus VivoBook X512FJ |
| Total memory slots | 2 (1 not upgradeable) |
| Maximum RAM | 20GB (up to 16GB in user accessible slot) |
| Memory type | DDR4 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 2666MHz (PC4-21300) |
| Voltage | Low - 1.2V |
| Number of pins | 260-pin |
FAQ about Asus VivoBook X512FJ RAM
How much RAM can I add to the Asus VivoBook X512FJ?
You can add up to 16GB in the single upgradeable slot. The laptop has 4GB soldered on the motherboard that can't be changed, so with a 16GB stick installed, you'll have 20GB total.
What type of RAM does the VivoBook X512FJ use?
It uses DDR4 SODIMM memory - the smaller laptop-sized RAM sticks. Make sure to get DDR4, not DDR3 or DDR5, and specifically SODIMM, not regular desktop DIMM.
What speed RAM should I buy for this laptop?
Get 2666MHz DDR4 memory (also labeled as PC4-21300). The laptop might work with faster RAM, but it'll just run at 2666MHz anyway, so no point paying extra for faster speeds.
Can I upgrade both RAM slots on the X512FJ?
No, only one slot is accessible for upgrades. The other slot has 4GB permanently soldered to the motherboard. This is pretty common in thin laptops to save space.
Is it worth upgrading from 8GB to 20GB total RAM?
Depends what you're doing. For basic web browsing and office work, 8GB is usually fine. But if you're multitasking heavily, editing photos/videos, or running virtual machines, jumping to 20GB will make a noticeable difference in performance.