This product is either discontinued or we cannot get that from suppliers.
HP 881169-B21 Full Processor Option Kit, Clock Speed 2.40 GHz, Overclocking Speed 2.90 GHz, Socket SP3, Thermal Design Power 170W, Compatibility HPE ProLiant DL385 Gen10 Server.
This platform has been designed with the security you need and the flexibility you require to accommodate the most demanding enterprise workloads.