Acer Aspire 3 A315-51-52S5 - RAM Upgrade Guide

The Acer A315-51-52S5 laptop has one memory slot available for RAM upgrades. It supports a maximum memory capacity of 20GB. The type of memory used is DDR4 SDRAM, and it comes in the SODIMM format, which is a compact design suited for laptops. For optimal performance, it is advisable to use RAM with a clock speed of 2666MHz, also referred to as PC4-21300.
Acer Aspire 3 A315-51-52S5 Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Acer Aspire 3 A315-51-52S5 |
| Total memory slots | 1 |
| Maximum RAM | 20GB |
| 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 Acer Aspire 3 A315-51-52S5 RAM
How much RAM can I put in my Acer A315-51-52S5?
You can upgrade to a maximum of 20GB total. The laptop has 4GB soldered onto the motherboard that can't be removed, plus one open slot where you can add up to 16GB.
What type of RAM do I need for this laptop?
You need DDR4 SODIMM memory - that's the smaller laptop-sized RAM sticks, not the full-size desktop ones. Make sure it's DDR4, not the older DDR3.
What speed RAM should I get?
Go with 2666MHz DDR4 (also labeled as PC4-21300). The system might accept faster RAM, but it'll just run at 2666MHz anyway, so no point paying extra for faster speeds.
Can I add 32GB of RAM?
No, the single available slot maxes out at 16GB. Even if you found a 32GB stick that physically fits, the system won't recognize more than 16GB in that slot.
Will my laptop run dual channel with the upgrade?
Yes, but it's a bit weird. You'll get dual channel for the first 8GB (4GB soldered + 4GB from your new stick), then single channel for anything above that. So with a 16GB upgrade, you get 8GB in dual channel and 12GB in single channel.
Is the RAM upgrade worth it?
If you're currently at just the 4GB soldered memory, absolutely. Moving to 12GB or 20GB total will make a huge difference for multitasking, browser tabs, and general responsiveness. The jump from 4GB to 20GB is night and day.