US Patent 8930647 Multiple class memory systems

An apparatus is provided comprising a physical memory sub-system including a first memory of a first memory class and a second memory of a second memory class, the second memory being communicatively coupled to the first memory. The apparatus is configured such that the first memory and the second memory are capable of receiving instructions via the memory bus. A system and method are also provided for circuit cooperation. The system includes a first semiconductor platform including at least one first circuit, and at least one additional semiconductor platform stacked with the first semiconductor platform and including at least one additional circuit. Furthermore, the system is operable such that the at least one first circuit and the at least one additional circuit cooperate to carry out at least one task.