Lenovo IdeaPad S400 - RAM Upgrade Guide
The Lenovo S400 laptop has a single memory slot for RAM upgrades, supporting a maximum capacity of 4GB. It uses DDR3 SDRAM as the memory type, designed in a SODIMM format, which is a compact type of memory module commonly used in laptops. For optimal performance, the recommended clock speed for the RAM is 1600MHz, often labeled as PC3-12800.
Lenovo IdeaPad S400 Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo IdeaPad S400 |
| Total memory slots | 1 |
| Maximum RAM | 4GB |
| Memory type | DDR3 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 1600MHz (PC3-12800) |
| Voltage | Low - 1.35V (DDR3L / PC3L) |
| Number of pins | 204-pin |
FAQ about Lenovo IdeaPad S400 RAM
How much RAM can I put in my Lenovo S400?
Max is 4GB total. There's only one memory slot, so whatever you install is all you get - no adding a second stick later.
What type of memory does the S400 use?
It takes DDR3 SODIMM modules - the smaller laptop memory sticks, not the full-size desktop ones. Make sure you get DDR3, not DDR4 or anything else.
What speed RAM should I buy for the S400?
Go with 1600MHz (also called PC3-12800). The system might work with other speeds but 1600MHz is what's recommended and will give you the best compatibility.
Can I add more RAM to keep my existing memory?
Nope, single slot means you have to remove whatever's in there to upgrade. If you've got 2GB now and want 4GB, you'll need to buy a 4GB stick and swap them out.
Is upgrading to 4GB worth it on this laptop?
If you're currently running 2GB or less, definitely. Going from 2GB to 4GB makes a noticeable difference for web browsing and basic multitasking. Just don't expect miracles - 4GB is still pretty limited by today's standards.