Lenovo G405 - RAM Upgrade Guide
The Lenovo G405 laptop has two memory slots available for RAM upgrades. It can support a maximum of 16GB of memory. The type of RAM compatible with this model is DDR3 SDRAM, and it uses a SODIMM form factor, which is a compact design typically used in laptops. For optimal performance, it is suggested to use RAM with a clock speed of 1600MHz, often referred to as PC3-12800.
Lenovo G405 Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo G405 |
| 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 G405 RAM
How much RAM can I put in my Lenovo G405?
The maximum is 16GB total. You've got 2 slots, so you can do 2x8GB sticks. Don't bother trying to put in more - the system won't recognize anything beyond 16GB.
What type of RAM does the G405 use?
It uses DDR3 SODIMM - that's the smaller laptop memory, not the full-size desktop sticks. Make sure you get DDR3, not DDR4 or DDR5, as they're not compatible and won't even fit in the slots.
What speed RAM should I get for the G405?
Go with 1600MHz (also labeled as PC3-12800). The system might accept slower speeds like 1333MHz, but you'll get better performance with 1600MHz. Faster RAM will work but will just run at 1600MHz anyway.
Can I mix different RAM sizes in my G405?
Yeah, you can mix sizes like 4GB + 8GB if needed. But for best performance, use matching pairs - same size, same speed, ideally same manufacturer. Mismatched RAM works but might not run in dual-channel mode.
Do I need to remove the old RAM when upgrading?
Depends on your current setup. If you've got one 4GB stick and want 16GB total, you'll need to replace it with 2x8GB. If you have an empty slot, you could just add another stick. Check what's installed first before buying.