Lenovo G40-70 - RAM Upgrade Guide

The Lenovo G40-70 laptop has two memory slots for RAM upgrades, allowing for a maximum capacity of 16GB. It uses DDR3 SDRAM, which comes in a small outline dual inline memory module (SODIMM) format. For optimal performance, the RAM should have a clock speed of 1600MHz, corresponding to the PC3-12800 standard.
Lenovo G40-70 Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo G40-70 |
| Total memory slots | 2 |
| Maximum RAM | 16GB |
| 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 G40-70 RAM
How much RAM can I put in my Lenovo G40-70?
You can install up to 16GB total. The laptop has 2 memory slots, so you could do 2x8GB sticks or keep one existing stick and add another.
What type of RAM does the G40-70 use?
It uses DDR3 SODIMM modules - the smaller laptop-sized memory sticks. Make sure you get DDR3, not DDR4 or DDR5, as they're not compatible.
What speed RAM should I get for the G40-70?
1600MHz (also labeled as PC3-12800) is the recommended speed. The system might accept faster RAM but it'll just run at 1600MHz anyway, so no point paying extra for faster speeds.
Can I mix different RAM sizes in my G40-70?
Yes, you can mix sizes like 4GB + 8GB, but for best performance try to match the sizes. Mixing brands is usually fine as long as the specs match.
Do I need to remove the existing RAM when upgrading?
Not necessarily. If you have one stick installed and an empty slot, just add the new one. If both slots are full with smaller capacity sticks, you'll need to replace one or both.