• CPU pertains to the hardware that executes instructions.

  • Processors are physical chips that contain one or more CPUs

  • Cores are the basic computation unit of the CPU

  • Multicore processors are faster up to a point of diminishing returns as many processors compete for memory.

  • Non-Uniform Memory Access (NUMA) is a system where each processor / core has its own local Cache Memory, and each local memory is connected via remote memory (called the shared system interconnect). This makes local access fast but remote access slow.