The U.S. Department of Energy recently announced that it will invest $325 million in a pair of supercomputers—capable of performing one-tenth of an exaflops or more—being developed by IBM, Mellanox, Nvidia Corp., and other companies for a 2017 debut. The planned supercomputers, named Summit and Sierra, will rely on a new computer architecture that stacks memory near the Nvidia GPU accelerators and IBM CPUs. That architecture’s method of minimizing the energy costs of moving data between the memory storage and processors is a big step toward exaflops supercomputers, experts say.