Lenovo IdeaPad S12 (2959) - RAM Upgrade Guide

The Lenovo S12 (2959) laptop has two memory slots for RAM, but only one of these slots can be upgraded by the user. The maximum amount of memory the device can support is 2GB, with up to 1GB of that in the user-accessible slot. It uses DDR2 SDRAM as its memory type, and the RAM comes in a SODIMM format, which is a compact design commonly used in laptops. For best performance, the RAM should have a clock speed of 667MHz, often referred to as PC2-5300.
Lenovo IdeaPad S12 (2959) Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo IdeaPad S12 (2959) |
| Total memory slots | 2 (1 not upgradeable) |
| Maximum RAM | 2GB (up to 1GB in user accessible slot) |
| Memory type | DDR2 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 667MHz (PC2-5300) |
| Voltage | 1.8V |
| Number of pins | 200-pin |
FAQ about Lenovo IdeaPad S12 (2959) RAM
How much RAM can I add to my S12?
You can only add 1GB maximum in the user-accessible slot. The laptop has 2 slots total, but one is soldered and can't be changed. So if yours came with 1GB built-in, you'd max out at 2GB total.
What type of memory stick do I need?
You need DDR2 SODIMM - that's the smaller laptop-sized memory, not the full-size desktop kind. Make sure it's DDR2, not DDR3 or DDR4, as they won't fit.
What speed RAM should I get?
Look for 667MHz or PC2-5300 RAM. That's the speed this laptop is designed for. Faster RAM will work but will just run at 667MHz anyway, so no point paying extra for speed you can't use.
Can I upgrade both memory slots?
No, only one slot is accessible for upgrades. The other one has memory permanently attached to the motherboard. This is pretty common in budget laptops to save costs.
Is 2GB enough RAM these days?
Honestly, 2GB is pretty tight for modern use. It'll handle basic tasks like web browsing with a few tabs, word processing, and light photo viewing, but don't expect smooth multitasking or running newer software. This laptop is from around 2009-2010, so it's really showing its age.