Lenovo IdeaPad S405 - RAM Upgrade Guide
The Lenovo S405 laptop has a single memory slot available for RAM upgrades. It supports a maximum memory capacity of 4GB. The type of memory used is DDR3 SDRAM, and it comes in the SODIMM format, which is a compact design commonly used in laptops. For optimal performance, the recommended RAM speed is 1333MHz, also referred to as PC3-10600.
Lenovo IdeaPad S405 Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo IdeaPad S405 |
| Total memory slots | 1 |
| Maximum RAM | 4GB |
| 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 IdeaPad S405 RAM
How much RAM can I put in a Lenovo S405?
Maximum is 4GB. It only has one memory slot, so you'll need to replace whatever's in there with a single 4GB stick.
What type of memory does the S405 use?
DDR3 SODIMM - that's the smaller laptop-sized memory sticks, not the full-size desktop ones.
What speed RAM should I get for the S405?
1333MHz, also labeled as PC3-10600. The system won't benefit from faster speeds even if you install them.
Can I add more RAM without removing the old one?
No, there's only one slot. You have to take out whatever's currently installed and replace it with the new stick.
Will 8GB work in the S405?
No, 4GB is the hard limit. Even if you install an 8GB stick, the laptop will only recognize 4GB of it.
Is it worth upgrading to 4GB if I already have 2GB?
Usually yes - doubling from 2GB to 4GB makes a noticeable difference for multitasking and running modern software. Just don't expect miracles since 4GB is still pretty limited these days.