The HP 647895-B21 memory module is engineered to increase the performance of HP server systems. This 4GB DDR3 memory kit is designed with a single rank, enabling a balanced performance for various computing environments. Operating at a speed of 1600MHz (PC3-12800), it ensures data can be transferred efficiently to and from the processor, enhancing overall system speed and responsiveness. This memory module is compatible with a wide range of HP servers, making it an ideal upgrade for improving multitasking capabilities and handling memory-intensive applications more effectively. The 647895-B21 kit is designed for easy installation, allowing for a quick and straightforward system upgrade. With HP's reputation for reliability, this memory kit offers a dependable solution for extending the life and capabilities of HP server systems.