Lenovo G405s - RAM Upgrade Guide
The Lenovo G405s laptop has two memory slots available for RAM upgrades, allowing for a maximum capacity of 16GB. It uses DDR3 SDRAM as the memory type, which comes in a SODIMM format, designed specifically for smaller devices like laptops. For optimal performance, the recommended RAM clock speed is 1600MHz, often labeled as PC3-12800.
Lenovo G405s Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo G405s |
| 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 G405s RAM
How much RAM can I put in a Lenovo G405s laptop?
You can upgrade to a maximum of 16GB total. The laptop has 2 memory slots, so you could install two 8GB modules to reach the maximum.
What type of RAM do I need for the G405s?
You need DDR3 SODIMM modules - these are the smaller laptop memory sticks, not the full-size desktop ones. Make sure to get DDR3, not DDR4 or DDR5, as they won't be compatible.
What speed RAM should I get?
1600MHz (also labeled as PC3-12800) is the recommended speed. You might find faster DDR3 modules like 1866MHz, but they'll just run at 1600MHz in this laptop anyway, so save your money and stick with 1600MHz.
Can I mix different RAM sizes?
Yes, you can mix sizes like 4GB + 8GB to get 12GB total. But for best performance, matching pairs (like 8GB + 8GB) work better since they can run in dual-channel mode.
Do I need to remove the old RAM when upgrading?
Depends on what's already installed. If you have one 4GB stick and want 16GB total, you'll need to replace it with two 8GB modules. If you have one slot empty, you can just add another module to the free slot.