Asus U43SD - RAM Upgrade Guide
The Asus U43SD laptop has two slots available for RAM upgrades, allowing for a maximum memory capacity of 8GB. It uses DDR3 SDRAM as the memory type, which comes in a small outline dual inline memory module (SODIMM) format. For optimal performance, it is suggested to use RAM with a clock speed of 1333MHz, also referred to as PC3-10600.
Asus U43SD Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus U43SD |
| Total memory slots | 2 |
| Maximum RAM | 8GB |
| 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 Asus U43SD RAM
How much RAM can I put in my Asus U43SD laptop?
You can install up to 8GB total. The laptop has 2 memory slots, so you could do 2x4GB sticks or keep one original stick and add another.
What type of RAM do I need for the U43SD?
You need DDR3 SODIMM modules - these are the smaller laptop memory sticks, not the full-size desktop ones. Make sure it's DDR3, not DDR4 or DDR5.
What speed RAM should I get?
1333MHz (also labeled as PC3-10600) is the recommended speed. You can technically install faster RAM, but it'll just run at 1333MHz anyway, so save your money and stick with that speed.
Can I mix different RAM sizes or do they need to match?
You can mix sizes like 2GB + 4GB, but for best performance, matching pairs (like 4GB + 4GB) work better since they can run in dual-channel mode. Different brands are usually fine as long as the specs match.
Will upgrading from 4GB to 8GB make a noticeable difference?
Yes, especially if you multitask or use memory-hungry programs. Going from 4GB to 8GB helps with browser tabs, smoother app switching, and general responsiveness. It's usually the best bang-for-buck upgrade on older laptops.