HP 660598-L21 Xeon E5-2620 2 GHz Processor Upgrade

The HP 660598-L21 is a processor upgrade kit that brings the Intel Xeon E5-2620 to compatible HP ProLiant servers. Running at a 2 GHz base clock with six cores and Hyper-Threading for 12 total threads, the E5-2620 occupies a practical middle ground in the Xeon E5 family — capable enough for general-purpose server duties like directory services, file sharing, DNS, and light virtualization, while remaining power-efficient compared to its higher-clocked siblings. For organizations maintaining existing Gen8 infrastructure, this upgrade can extend server usefulness without requiring a full platform replacement.

As an HP-validated kit, the 660598-L21 is tested against specific ProLiant models to ensure firmware compatibility and thermal compliance. The L21 designation identifies this as a factory-integration option, so buyers should confirm whether a heatsink is included or if the existing server cooling hardware will be reused. For dual-socket ProLiant servers currently running a single processor, adding a second E5-2620 effectively doubles available compute threads, which can be a cost-effective way to scale capacity for growing workloads on proven hardware.