If you are going to overclock, go for the Corsair XMS3000, I've been hearing good things about it. The latest Samsung Original sticks tend to suck a lot as they're based on the DTL modules. Last week I purchased a stick of Samsung Original from Overclockers.co.uk and the stick barely does DDR375 on my BG7. Extra voltage doesn't help either. The modules on my stick are Week 0224 DTL.