I am going off to school and need a reliable laptop. I purchased this used model (described in the title) from a local computer hardware store around a year ago, and so far it has worked well for me. However, I'll need more speed at school, and as I can't afford a new laptop with comparable specs, I'm looking into upgrading this one. I've found a compatible and affordable SSD and battery, and now I need RAM. I'm looking to find 8GB at an affordable price, but I don't trust myself to find one that'll work for certain. Any help would be appreciated, and to that end here is the motherboard's manual; the memory specifications are on page 14: http://www.intel.com/assets/PDF/datasheet/320122.pdf