Lenovo IdeaPad S145-15API - RAM Upgrade Guide

The Lenovo S145-15API laptop has a single memory slot for RAM upgrades. It can support a maximum of 20GB of memory, with up to 16GB accessible in the user-replaceable slot. The type of memory used is DDR4 SDRAM, and it comes in a SODIMM format, which is a compact design for laptops. For best performance, a RAM clock speed of 2666MHz (also referred to as PC4-21300) is recommended.
Lenovo IdeaPad S145-15API Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo IdeaPad S145-15API |
| Total memory slots | 1 |
| 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 Lenovo IdeaPad S145-15API RAM
How many RAM slots does the Lenovo S145-15API have?
Just one slot that you can access. There's 4GB soldered on the motherboard that you can't touch, plus the one slot you can upgrade.
What's the maximum RAM I can have in this laptop?
20GB total - that's 4GB soldered on the board plus up to 16GB in the upgrade slot. Can't go higher than that.
What type of RAM do I need for the S145-15API?
DDR4 SODIMM - the smaller laptop memory sticks. Make sure it's DDR4, not the older DDR3 or newer DDR5.
What speed RAM should I get?
2666MHz is the recommended speed. You might see it listed as PC4-21300. Faster RAM will work but will just run at 2666MHz anyway.
Can I remove the 4GB that comes with the laptop?
Nope, that 4GB is soldered directly to the motherboard. You can only upgrade the single slot, adding up to 16GB for 20GB total.
Will any DDR4 laptop RAM work?
As long as it's DDR4 SODIMM (the laptop size), it should work. Stick with 2666MHz for best compatibility. Higher speeds will downclock automatically.