Memory compatibility


Nov 14, 2010
I could purchase 2 of these, I have one of these

Should I purchase one of the first ones, or two of the first one? Could i add one of the first ones to the ones i have in there now? Or should i just add another one of the second ones to what i have to make 8gb? my question is, is one of the first ones better than 2 of the second ones? each 8 gigs? or could i make 12 gigs by mixing them, or just get rid of what i have now and get 16gig of the first one. Sorry if this is confusing.