I have an amd a8 laptop 2005ax with 4gb ddr3 sodimm ram type working at 1600 mhz frq..a pavilion g6 model from HP.would like to ask whether an 8gb ram would work fine with the existing ram or can I buy 2 (8) GB ram's and fit it into My lappi for a good speed? Basically will it support? As I want to run virtual machine which requires a good configuration. Plz help me with it as much confused.