My question is: do I stick with my 8gigs of Kingston 1333 unganged memory or shal I get the corsair vengeance 8gb 1600. Would I really notice a difference? Think my board can take it it's the ga-ma78lmt-us2h
You're not going to notice a difference.
The timing of these things is so minutely different that a user never really notices the difference. It's usually benchmarks and a few apps that really show us and tell us how much of a difference it actually made.