If you spend enough time around hardware enthusiasts or lurking in PC building forums, you start to hear the same rituals when it comes to RAM: set your XMP or EXPO profile, tighten your timings if you’re feeling brave, and make peace with whatever speed your motherboard can handle. I thought I understood all there is to it. After all, memory tuning is supposed to be one of the more straightforward parts of a build. Then, I stumbled across a BIOS setting that took me by surprise.