Product UPC: 883436091633 IBM Xeon DP L5640 2.26 GHz Processor Upgrade - Socket B LGA-1366 # of Cores: Six-Core Series: Xeon DP L2 Cache: 1MB L3 Cache: 12MB Manufacturing Tech: 32 nm 64-Bit Support: Yes Cooling Device: Cooling device not included - Processor Only QPI: 5.86 GT/s