The HP 492239-B21 - HP E5520 (2.26GHz - 4C) DL380 G6 CPU Kit is engineered to enhance the performance of HP ProLiant DL380 G6 servers. Featuring an Intel Xeon E5520 processor with four cores and a base clock speed of 2.26GHz, it delivers efficient performance for a wide range of server applications. The processor supports Intel's Hyper-Threading Technology, allowing two threads to run simultaneously on each core, effectively doubling the processing capacity. It also includes an 8 MB SmartCache and supports Intel QuickPath Interconnect (QPI), which improves bandwidth and reduces latency for better overall performance. The kit comes complete with a CPU, a dedicated heatsink, and thermal paste to ensure optimal cooling and performance reliability. It's ideal for businesses looking to upgrade their server capabilities for enhanced virtualization, data processing, and application hosting capabilities.