Manuals and User Guides for Intel E5420 - CPU XEON QUAD CORE 2.50GHZ FSB1333MHZ 12M LGA771 HALOGEN FREE TRAY. We have 3 Intel E5420 - CPU XEON QUAD CORE 2.50GHZ FSB1333MHZ 12M LGA771 HALOGEN FREE TRAY manuals available for free PDF download: Datasheet, Specification