if you are going to be playing games, and not going to be very heavy on multitasking different programs and operations, just get 2 sticks of the 512 value ram, they will last you a long time..
It all depends on what you will be doing.. the hyperx ram and its speeds only start to show when your computer recources start to get too heavy due to multitasking with various programs..
if you are like me, and play one game at a time, dont multitask heavy stuff, then go for the value.. you will not notice much difference, if any at all..