The breakthrough performance, energy efficiency, and reliability of Intel Xeon processor based server systems make them the ideal choice for all of your data demanding or standard enterprise infrastructure applications. Bus Speed: 1333 MHz Bus Speed: 1333 MHz Product Type: Processor Process Technology: 45 nm Limited Warranty: 3 Year Product Type: Processor Manufacturer Part Number: BX80574E5440A Process Technology: 45 nm Limited Warranty: 3 Year Clock Speed: 2.83 GHz Product Model: E5440 Clock Speed: 2.83 GHz Manufacturer: Intel Corporation Product Model: E5440 Product Name: Xeon DP Quad-Core E5440 2.83GHz Processor Package Type: Retail Product Line: Xeon DP Processor Socket: Socket J Brand Name: Intel Processor Socket: Socket J Brand Name: Intel L2 Cache: 12 MB L2 Cache: 12 MB Processor Core: Quad-core (4 Core) Processor Manufacturer: Intel Product Family: Xeon DP Processor Core: Quad-core (4 Core) Processor Manufacturer: Intel