Acer Aspire 5 A515-51-75UY - RAM Upgrade Guide

The Acer A515-51-75UY laptop has a single memory slot for RAM upgrades. It supports a maximum memory capacity of 20GB. The type of memory used is DDR4 SDRAM, and it comes in a SODIMM form factor, which is a compact design suitable for laptops. For optimal performance, it is recommended to use RAM with a clock speed of 2666MHz, also referred to as PC4-21300.
Acer Aspire 5 A515-51-75UY Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Acer Aspire 5 A515-51-75UY |
| 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 5 A515-51-75UY RAM
How much RAM can I put in my Acer Aspire 5 A515-51-75UY?
Maximum is 20GB total. It's got one memory slot, and since it probably came with 4GB soldered on the motherboard, you can add a 16GB stick to hit that 20GB max.
What type of RAM does the A515-51-75UY use?
DDR4 SODIMM - that's the smaller laptop memory. Make sure it's 2666MHz speed (also called PC4-21300) for best performance.
Can I upgrade to 32GB RAM on this model?
No, 20GB is the hard limit. The system won't recognize anything beyond that even if you install a bigger module.
Why does it have such a weird maximum like 20GB instead of 16 or 32?
Because it has 4GB soldered directly to the motherboard plus one upgrade slot. So 4GB built-in + 16GB stick = 20GB total.
Will faster RAM like 3200MHz work?
It'll work but will automatically downclock to 2666MHz. Save your money and just get 2666MHz RAM since you won't see any speed benefit from faster modules.
Is the RAM upgrade worth it on this laptop?
If you're running with just the base 4GB, absolutely. Going to 12GB (4+8) or 20GB (4+16) will make a huge difference for multitasking and general performance.