Intel’s Optane Memory H10 SSD is one of those enigmas of PC hardware that can drive reviewers crazy. It is—simply put—a storage technology that is more responsive in some cases, but slower in others.

When does a PC have “24GB of memory?” When its Intel Optane Memory, which assists in storage, is being counted on top of the 4GB, 8GB, or 16GB of RAM we’re used to seeing on mainstream PCs.

Intel has announced a new member of its Optane series, the H10, which adds some of the company's 3D NAND storage beside its Optane 3D XPoint memory on a single M.2 drive. Initially, the H10 will be ...