Asus K51AC - RAM Upgrade Guide
The Asus K51AC laptop has two memory slots available for RAM upgrades. It can support a maximum of 4GB of memory. The type of RAM compatible with this laptop is DDR2 SDRAM, and it uses a SODIMM form factor, which is a smaller type of memory module commonly used in laptops. For optimal performance, the recommended RAM clock speed is 800MHz, often labeled as PC2-6400.
Asus K51AC Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus K51AC |
| Total memory slots | 2 |
| Maximum RAM | 4GB |
| Memory type | DDR2 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 800MHz (PC2-6400) |
| Voltage | 1.8V |
| Number of pins | 200-pin |
FAQ about Asus K51AC RAM
How much RAM can I put in my K51AC laptop?
Maximum is 4GB total. You've got 2 slots to work with, so that's 2GB per slot if you want to max it out.
What type of memory does the K51AC use?
It uses DDR2 SODIMM modules - that's the smaller laptop-sized RAM sticks, not the full-size desktop ones. Make sure you get DDR2, not DDR3 or DDR4.
What speed RAM should I get for the K51AC?
Go with 800MHz (also labeled as PC2-6400). The system might accept other speeds but 800MHz is what works best.
Can I mix different RAM sizes in the K51AC?
Yeah, you can mix sizes like 1GB + 2GB, but for best performance try to match them. Same size, same speed if possible.
Do I need to upgrade both RAM slots at once?
Nope, you can upgrade one at a time. If you've got 2GB now (like 1GB+1GB), you could just replace one stick with a 2GB to get 3GB total.
Will faster RAM like 1066MHz work in the K51AC?
It'll probably work but will run at 800MHz anyway. The laptop will downclock it to match what it supports, so save your money and stick with 800MHz.