Lenovo IdeaPad S400u - RAM Upgrade Guide
The Lenovo S400u laptop has a single memory slot for RAM upgrades. It can support up to 8GB of memory. The type of RAM compatible with this device is DDR3 SDRAM, and it uses a SODIMM form factor, which is a smaller type of memory module designed for laptops. For optimal performance, the recommended clock speed for the RAM is 1600MHz, also referred to as PC3-12800.
Lenovo IdeaPad S400u Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo IdeaPad S400u |
| Total memory slots | 1 |
| Maximum RAM | 8GB |
| 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 S400u RAM
How many RAM slots does the Lenovo S400u have?
Just one slot total. This laptop comes with RAM soldered to the motherboard plus one upgradeable slot, so you can only replace/add one stick.
What's the maximum RAM I can put in the S400u?
8GB is the max. Whatever's soldered on the board plus up to 8GB in the single slot - the system won't recognize anything larger.
What speed RAM should I get?
1600MHz (also labeled as PC3-12800) works best. You can use slower 1333MHz if that's what you have, but 1600MHz is the sweet spot for this model.
Can I mix different RAM speeds?
Yes, but the system will run all RAM at the slower speed. If you have 1333MHz soldered and add 1600MHz, everything runs at 1333MHz.
Is the RAM upgrade difficult?
Not too bad - you'll need to remove the bottom panel to access the slot. Just a few screws and you're in. Make sure to ground yourself first to avoid static damage.