What RAM is compatible with iMac?

[ord6]

Hello,

I'm interested in upgrading my mid 2011 iMac and I wanted to know if one of the RAMs below is compatible:

http://www.ebay.com/itm/Samsung-Ori...5125653?pt=US_Memory_RAM_&hash=item256b5e3395

http://www.ebay.com/itm/Team-Group-...5102295?pt=US_Memory_RAM_&hash=item256b5dd857

Also, which is better?

Thanks!

 

[ixodes]

Posting from my iPhone, so I don't have the specs handy. Just go to Apple.com they're easily found there.

 

[ord6]

Posting from my iPhone, so I don't have the specs handy. Just go to Apple.com they're easily found there.

Thanks, I saw the specification, I'm just not that expert so I wanted to make sure..

 

[semajm85]

just got 2 sets of these for my 27" iMac with i7 processor...

shouldnt be a problem right?

http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=96097E30A5CA7304