Hi my friends,

I'm using DELL Inspiron 1564 Laptop with:

- Windows 7 Ultimate 64bit

- 2 RAM slots with 2 RAM plugged, total amount of RAM  is 4GB

Now I want to upgrade RAM amount for better performance in my working.

So in this case, what is the maximum of RAM amount which DELL Inspiron 1564 allows?

Please help me, thanks!