Hi i want some help in advice what should i buy. I am presently using sony viao laptop with i3-3227u CPU@1.9 ghz and ram one slot with 4gb ddr3 798.1 Mhz second slot empty only 2 slots with windows 10. Now my nature of work only includes web browsing with 5 -6 tabs and my memory stucks to 100 % wit lot of lag. To get rid of this problem and make my browsing fast what kind of ram i can add in the empty slot please guide.