Asus X409JB - RAM Upgrade Guide
The Asus X409JB 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 20GB, with up to 16GB installable in the accessible slot. It uses DDR4 SDRAM, which comes in a small outline dual inline memory module (SODIMM) format. For best performance, the recommended RAM speed is 2666MHz, also referred to as PC4-21300.
Asus X409JB Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus X409JB |
| 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 X409JB RAM
How much RAM can I add to the Asus X409JB?
You can add up to 16GB in the single accessible slot. The laptop has 4GB soldered on the motherboard that can't be changed, so maximum total is 20GB.
What type of RAM does this laptop use?
It uses DDR4 SODIMM modules - the smaller laptop-sized RAM sticks. Make sure to get 2666MHz speed for best compatibility.
Can I upgrade both RAM slots?
No, only one slot is accessible for upgrades. The other slot has 4GB permanently soldered to the motherboard.
Will faster RAM like 3200MHz work?
It might work but will run at 2666MHz anyway. Better to just get 2666MHz RAM since the laptop won't use the extra speed.
What's the best RAM configuration for this laptop?
Adding a 16GB stick gives you 20GB total (16GB + 4GB soldered). This is the maximum possible and should handle most tasks smoothly.
Is it worth upgrading from the stock configuration?
If you're multitasking, using Chrome with lots of tabs, or doing any creative work, definitely. The stock 4GB is pretty limiting for modern use.