The IBM 12R8239 module comprises a pair of 2048MB DIMMs, totaling 4096MB (or 4GB) of memory. These DIMMs feature a 276-pin configuration, designed to interface with compatible IBM systems, enhancing their computational capabilities. Specifically engineered for high-performance computing environments, these memory modules support systems requiring substantial memory bandwidth and capacity to handle complex applications and workloads. Despite the evolution of memory technologies, the IBM 12R8239 remains an integral component for upgrades or maintenance of compatible legacy IBM systems, ensuring operational continuity and reliability. Each DIMM is meticulously manufactured to meet IBM's stringent quality and compatibility standards, ensuring a seamless integration with the supported hardware.