HBM OR OTHER TYPE MEMORY WITH FLC SYSTEM

A memory system, operating under the HBM standard, comprising a memory stack having layers of memory dies, on a base die. The base die is in communication with the memory stack and further comprises final level cache (FLC) controller. The FLC controller configured to receive the data request for requested data from a requesting element and process the data request to determine if the requested data is stored in the memory stack. Responsive to the requested data being stored in the memory stack, retrieve the requested data from the memory stack, transmit the requested data to the processor, and update a recently used tag associated with the requested data. Responsive to the requested data not being stored in the memory stack, the final level cache controller retrieves the requested data from an external memory, transmits the requested data to the processor, and stores the requested data in the memory stack.