RAM Questions

Check crucial.com- they have great rates for RAM and HD's of all kinds, and they let you select your exact computer and tell you what RAM you will need.

 

I believe any of those RAM modules would work. As mentioned though, if you want to be sure, get your RAM from crucial or macsales.com (OWC) which guarantee their RAM to work with whatever mac you choose.

To your other questions:

1) There is really no difference. As long as you get the right one speed wise and such RAM is RAM. Apple just charges a fortune for theirs.

2) No, adding RAM does not hurt your warranty at all. In fact, apple offers guides on their site for how to do it. With MacBooks the hard drive and RAM can both be upgraded without voiding applecare.

 

Run crucial scanner.

 

Yes and no. Crucial for that MacBook will tell you that you can only install 4GB, but your MB, as long as it has the latest firmware will accept 8GB.

 

You need the one that is PC3-8500. The 10600 is faster than what your computer supports.

Basically ram is rated for a certain speed. Your computer supports 1067mhz which is the 8500.