The HP 587480-B21 CPU kit features the Intel Xeon E5640 processor and is designed specifically for the HP ProLiant DL380 G7 server. This quad-core processor operates at a clock speed of 2.66GHz, offering robust performance for complex computing tasks. The inclusion of Intel's Hyper-Threading Technology allows the E5640 to handle up to 8 threads simultaneously, enhancing multitasking capabilities and performance in threaded applications. Additionally, it supports Intel Turbo Boost Technology, enabling automatic increases in clock speed under heavy workloads, up to a maximum of 2.93GHz. The kit not only includes the processor but also comes with a heatsink and fans necessary for maintaining optimal thermal conditions within the server chassis. This comprehensive package ensures compatibility and reliability, making it ideal for upgrades or maintenance of the HP ProLiant DL380 G7, enhancing its performance for virtualization, database management, and other intensive applications.