1- Hynix 1GB DDR3 1333 2- Hynix 4GB DDR3 1600 3- Kingston 4GB DDR3 1600 4- Kingston 4GB DDR3 1333 5- Kingston 4GB DDR3 1333 6- Samsung 2GB DDR3 1333 And there are DDR2 RAMs available, message me privately for details. The prices are cheap and I won't disagree with you on anything. All of them are working well and in good condition. If you want to know compatibility and whether they will work with the RAMs you have, message me and I will tell you what is compatible and what is not. Of course, all the RAMs are for desktop computers, not for laptops.