hey guys, really new to computers in general let alone gaming laptops. Im willing to spend a bit over $2000 and have been looking at the alienware m15x. i know for sure i'd be getting it with the i7-720 processor but have questions about the memory and graphics card. for the graphics card, is the 1GB NVDIA worth the $200 over the 512MB? is 4GB of RAM enough for a good gaming laptop or should i pay more for 6GB? and finally for the hard drive, is the 128GB solid state worth $150 over the 500gb SATA? thanks in advance and sorry if these are really nooby questions. any other advice on gaming laptops would be great too.