I have a HP pavilion a250y and am planing to upgrade the ram. My compute has 4 slots on the board.have a HP pavilion and I want to upgrade the RAM. My computer has four slots and I want to know how much RAM I can get. http://www.newegg.com/Product/Product.aspx?Item=N82E168... I think that RAM will fir in my computer and want to know how much I can get?