SKU : 345321-B21 Mfg.: Compaq Descrption :Compaq XEON 2.2-2MB PROC OPT KIT ML570 G2 DL580 G2HP Xeon MP 2.20 GHz Processor Upgrade - Single-core (1 Core) - 2 MB Cache - 400 MHz Bus Speed The Intel Xeon processor MP family is designed specifically for mid-tier servers performing key business functions such as collaboration, application serving, enterprise resource planning, and business Intelligence. The Intel Xeon processor MP features Hyper-Threading technology, Integrated Three-Level cache architecture and Intel NetBurst microarchitecture to provide versatility, performance, value and dependability for today's server platforms. Same as MFG Part #:352311-001345322-B21352312-001