I have an alienware m17x R3 i have 4gb of memore currently in my laptop. i recently got a new SSD and made that my boot drive. I also made sure I have a 64-bit OS so i know i can have more then 4gb when i first installed the OS on my new SSD I didnt realize if there was low memory or not i dont think so because i think i would have noticed it but maybe not. but i looked at my windows experience index and it use to be 7.5 and now its 5.5 because of my RAM not sure if one sticks bad or not havent really done alot wanted to get other peoples input but i did use this program to defrag my memory and that how i got up to 2.45gb available it was worse before. thanks i appreciate any input you guys will have.