Asus K42DY - RAM Upgrade Guide
The Asus K42DY laptop has two memory slots available for RAM upgrades, allowing for a maximum capacity of 8GB. It uses DDR3 SDRAM, which comes in a SODIMM form factor, designed specifically for compact devices like laptops. For optimal performance, the recommended clock speed for the RAM is 1066MHz, also referred to as PC3-8500.
Asus K42DY Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus K42DY |
| Total memory slots | 2 |
| Maximum RAM | 8GB |
| Memory type | DDR3 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 1066MHz (PC3-8500) |
| Voltage | 1.35V - 1.5V |
| Number of pins | 204-pin |
FAQ about Asus K42DY RAM
How much RAM can I put in this laptop?
You can install up to 8GB total. The laptop has 2 memory slots, so that's typically 2x4GB sticks or one 8GB stick if you want to leave a slot open.
What type of RAM do I need to buy?
You need DDR3 SODIMM modules - the smaller laptop-sized memory sticks, not the full-size desktop ones. Make sure it's DDR3, not DDR3L or DDR4, as those won't work.
What speed RAM should I get?
The recommended speed is 1066MHz (also labeled as PC3-8500). You can use faster RAM like 1333MHz or 1600MHz, but it'll just run at 1066MHz anyway, so no point paying extra for faster speeds.
Can I mix different RAM sizes?
Yes, you can mix sizes like 2GB + 4GB to get 6GB total. Just try to match the speed and timings if possible. The system will run them in single-channel mode instead of dual-channel, which is slightly slower but usually not noticeable.
Do I need to replace both sticks or can I just add one?
If there's an empty slot, just add one. If both slots are full with smaller sticks, you'll need to replace at least one. Check what's already installed first - might have 2x2GB and you can swap one for a 4GB to get 6GB total.