I currently have 2 2gb patriot memory ram sticks installed on my gaming desktop. i've decided 4gb of ram just isn't enough so im going to purchase new ram (off amazon). I'm next to clueless on how ram works and what is compatible and what isnt. Will i need to purchase 2 2gb ram sticks since that is what my other ones are? Will they need to be the exact same sticks of ram or can they be different? Will i be able to install 2 4gb ram sticks to work along with my 2 2gb sticks of ram? I have 4 ram slots on my mobo, so i am assuming that i will be able to use all 4 slots at the same time. also will any amount of ram be compatible with my mobo? If you need my comp specs to help me solve this i will happily look them up and post them for you if it is needed. all help will be greatly appreciated, also if you have recommendations the ram i should get please let me know! thanks ^-^