I have a mid 2010 white macbook with 2 GB of Ram. I am looking to upgrade and want to know which ones can be used. I found several on Amazon and want to know if they are compatable. 1. http://www.amazon.com/Crucial-204-p...T2CP51264BC1339/dp/B003DZJQQI/ref=pd_sim_pc_5 2. http://www.amazon.com/Kingston-Technology-Notebook-KTA-MB1066K2-8G/dp/B001PS9UKW/ref=pd_cp_pc_2 3. http://www.amazon.com/Crucial-CT2CP...6?s=electronics&ie=UTF8&qid=1339118628&sr=1-6 If more than one is compatable is there a difference in quality? Thanks in advance! And would I lose my Applecare and void my warranty by upgrading. Update: I have Mac OSX 10.7.4.