I have a HP dv7-1285dx(Windows 7 64bit) laptop that has 6 gb ddr2 ram in it installed factory. I was considering getting maybe ddr3 (2)4GBs sticks to put in. I mostly use my laptop for video watching(twice, youtube) and ofcourse games. Is it worth the upgrade? Why all of a sudden does ram seem to be so expensive? Any help/advice is appreciated.