“Installed memory 6GB?? Hello, Just a little confused. Laptop spec on Best Buy website state 6GB? How is that possible? Memory is installed in modules of 4GB,8GB,16GB,etc..is the 6GB on-board memory or shared with video? Do the memory slots have any modules installed or are they both free/empty? Thank you for the help...would like to order some sticks when ordering the laptop...just want to make sure of the configuration before hand.”