The HP 801258-L21 is a processor upgrade kit designed for the HP ML350 Gen9 server series. This kit features the Intel Xeon E5-2623 v4 processor, which operates at a base frequency of 2.60GHz. It has 4 cores, enabling efficient multitasking and improved performance in multi-threaded applications. The processor supports Intel's Hyper-Threading Technology, allowing it to handle up to 8 threads simultaneously, enhancing its computational capabilities and throughput. It comes with a 10MB cache, which helps in accelerating data access times and reducing latency. The kit is designed for easy installation in compatible HP servers, ensuring a seamless upgrade path for businesses looking to increase their server performance without a complete system overhaul. Its compatibility with the ML350 Gen9 series allows organizations to extend the life and performance of their existing infrastructure, ensuring reliability and performance for enterprise-grade applications.