Lenovo Thinkpad E490 - RAM Upgrade Guide
The Lenovo E490 laptop has two memory slots available for RAM upgrades, allowing a maximum capacity of 32GB. It uses DDR4 SDRAM as the memory type, which comes in the SODIMM form factor, designed for compact devices like laptops. For optimal performance, the recommended RAM speed is 2666MHz, also referred to as PC4-21300.
Lenovo Thinkpad E490 Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo Thinkpad E490 |
| Total memory slots | 2 |
| Maximum RAM | 32GB |
| 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 Lenovo Thinkpad E490 RAM
How much RAM can I put in my E490?
You can go up to 32GB total. The laptop has 2 slots, so that's 16GB per slot maximum.
What kind of memory does the E490 use?
It uses DDR4 SODIMM modules - those are the smaller laptop memory sticks, not the full-size desktop ones.
What speed RAM should I get for the E490?
2666MHz is the recommended speed. You might see it listed as PC4-21300 - same thing, just different naming convention.
Can I mix different RAM sizes in the E490?
Yeah, you can mix sizes like 8GB + 16GB if needed. Just keep in mind dual channel performance works best with matched pairs.
Do I need to remove the old RAM when upgrading?
Depends on your current setup. If both slots are already filled, you'll need to remove at least one stick. If you have a free slot, just add the new module.
Will faster RAM like 3200MHz work in the E490?
It'll work but will downclock to 2666MHz automatically. No point paying extra for faster speeds since the system won't use them.