Lenovo Thinkpad Edge E520 - RAM Upgrade Guide

The Lenovo Edge E520 laptop has two memory slots available for RAM upgrades. It can support a maximum of 8GB of memory. The type of RAM compatible with this laptop is DDR3 SDRAM, and it uses a SODIMM form factor, which is a compact design typically used in laptops. For best performance, the recommended clock speed for the RAM is 1333MHz, also referred to as PC3-10600.
Lenovo Thinkpad Edge E520 Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo Thinkpad Edge E520 |
| Total memory slots | 2 |
| Maximum RAM | 8GB |
| Memory type | DDR3 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 1333MHz (PC3-10600) |
| Voltage | 1.35V - 1.5V |
| Number of pins | 204-pin |
FAQ about Lenovo Thinkpad Edge E520 RAM
How much RAM can I put in a Lenovo Edge E520?
The E520 maxes out at 8GB total. It has 2 slots, so you can do 2x4GB sticks. That's the ceiling - won't recognize anything higher even if you try.
What type of RAM does the Edge E520 use?
It uses DDR3 SODIMM - the smaller laptop memory modules. Make sure you get SODIMM not regular DIMM which is for desktops. DDR3 only, won't work with DDR2 or DDR4.
What speed RAM should I get for the E520?
1333MHz (PC3-10600) is what's recommended. You can technically use faster RAM like 1600MHz, but it'll just run at 1333MHz anyway. No point spending extra for speed you won't use.
Can I mix different RAM sizes in the E520?
Yeah, you can mix sizes like 2GB + 4GB = 6GB total. Just know that mixing can sometimes cause minor performance hits compared to matched pairs. But it works fine if you're on a budget.
Do I need to replace both RAM sticks or can I just add one?
Check what's already installed first. If there's one slot free, just add a stick. If both slots are filled with smaller modules, you'll need to replace at least one to upgrade. Most E520s came with 4GB (either 1x4GB or 2x2GB).