Many people still think the RAM speed that’s mentioned on the box is what they get when they finish building their PC and boot it for the first time. After all, when you install a kit that proudly advertises 6400MT/s, it’s only natural to expect your system to recognize and use that frequency automatically. But the moment you open Task Manager or head into the BIOS and notice a much lower number, the confusion sets in. It almost feels like you’ve got a faulty RAM kit or your motherboard isn’t detecting it correctly.