Asus U40SD - RAM Upgrade Guide
The Asus U40SD laptop has two memory slots available for RAM upgrades. It can support a maximum of 8GB of memory. The type of RAM used is DDR3 SDRAM, and it comes in the SODIMM form factor, which is commonly used in laptops due to its compact size. For best performance, it is advised to use RAM with a clock speed of 1333MHz, also referred to as PC3-10600.
Asus U40SD Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus U40SD |
| 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 U40SD RAM
How much RAM can I put in my Asus U40SD laptop?
Maximum is 8GB total. The laptop has 2 memory slots, so you can install two 4GB modules to reach the maximum.
What type of memory does the U40SD use?
It uses DDR3 SODIMM modules - the smaller laptop-sized memory sticks, not the larger desktop ones. Make sure to get SODIMMs, not regular DIMMs.
What speed RAM should I buy for the U40SD?
Get 1333MHz DDR3 (also labeled as PC3-10600). The laptop might work with faster RAM like 1600MHz, but it'll just run at 1333MHz anyway, so no point paying extra.
Can I mix different RAM sizes in the two slots?
Technically yes - like 2GB in one slot and 4GB in the other for 6GB total. But matching pairs (like two 4GB sticks) usually gives better performance since they can run in dual-channel mode.
Do I need to remove the existing RAM when upgrading?
Depends what's already installed. If it came with one 4GB stick and you want 8GB total, just add another 4GB stick to the empty slot. If it has two 2GB sticks and you want 8GB, you'll need to replace both with 4GB modules.