TheMatt

Both are good quality, I don't expect you will have trouble with either.

RAM is very easy to install. Since I also have an acer, I can give you pretty close instructions for installation.

1. If you look on the bottom, you should see many compartments. On mine, its the one in the center. Look on your owners manual to find out which it is.

2. Before you open anything, discharge static by touching something metal. It is also recomended that you get antistatic wristbands.

3. Completely shutdown the laptop, unplug it, and remove the battery.

4. Open up the memory compartment. You will need a screwdriver, one thats not magnetic. There will be two or more small screws. They might not actually come out of the memory door when you loosen them, even if the door opens. Inside you will see the memory parallel to the motherboard. the two slots will either be stacked or opposite each other. They are stacked on mine.

5. To install the memory, make sure its facing the right way. You will know this by the noch in the RAM. Insert it at a 45 degree angle, and once the pins are in the slot, push down toward the motherboard. It should snap into place. Once the RAM is secure, you can replace everything and boot up.

6. If you need to access the slot under the first module in a stacked setup, you will have to remove the first module. To do this, release the clips by pushing them away from the RAM. Then, lift the RAM at the end where its not conected away from the motherboard until its at a 45 degree angle. Now you can pull it out.

Remember to only hold the RAM by its sides, do not touch the pins. If you have 2 x 256, then I would keep the other sticks for troubleshooting purposes.