Intel just unleashed a new kind of computer memory it believes will fundamentally change the way the world builds computers. But it won’t tell the world what’s inside. The company calls this new creation 3D XPoint—pronounced “three-dee cross-point”—and this week, after touting the stuff for a year-and-a-half, Intel finally pushed it into the market.

Get in-depth coverage of current and future trends in technology, and how they are shaping business, entertainment, communications, science, politics, and society.