What kind of risks do you run when you purchase 3rd party RAM? I mean other then the obvious of it not working properly, can you do damage to your system? As I shop for alternatives other then ordering from Apple, like say from Transcend on NewEgg.com for my mac pro, is the lower price worth it? Also, after installing 3rd party RAM, what can you do to determine if it is working properly? Does faulty RAM make it self very apparent when trying to use your machine? What kind of diagnostics can you run? This would be the first time installing RAM myself, just wondering if anyone can offer some tips.