It is better to use less slots if possible. Puts less stress on the memory controller on the CPU. You will more than likely have to adjust voltages if you fill all the Ram slots.
Originally Posted by mojoman0
ordered the g.skill sniper for $50. Looked up a benchmark and saw about a 10% speed increase at 1866. Doesn't really translate to real world but eh why not
Good choice. G Skill rules. Great memory for a great price.