As flobelix has indicated, it is a matter mostly about the quality of the RAM and the CPU's IMC ability. I have the highest respect for Corsair RAM. You didn't mention the CPU you are going to use, but I presume a 4770k? I was able to achieve 2800 with the Corsair Dominator Platinum, however, I found the optimum RAM speed on my particular setup to be less than at 2800. Here is another tip. RAM speed beyond 1600 is almost a non factor for a gaming rig, and does very little for rendering and real world performance. CPU speed is the primary mover when it comes to performance enhancement.