RAM: When it comes to memory, or RAM, even the cheapest notebooks have 4GB these days so don’t settle for less. If you can get a system with 6 or 8GB, you’ll be better prepared for high-end applications and lots of multitasking. Gamers and power users should look for 16GB of RAM.
Hard Drive: For most users, a fast drive is more important than a large one. If you have a choice, go for a 7,200-rpm hard drive over a 5,400-rpm unit. Even if you have several movies and games on your hard drive, a 320GB should provide more than enough space, but 500GB or 750GB drives usually don’t cost much more.