Hewlett-Packard 458265B21 – Intel Xeon DP Quad-core E5420 2.50GHz Processor 2.50 GHz – 1333 MHz FSB – 12 MB L2 – Socket J

“This industrys first quad-core processor for mainstream servers provides breakthrough performance and capabilities for the ultimate in powerful, dense and energy efficient servers. With the Quad-Core Intel Xeon processor you get breakthrough performance – up to 50% greater than the industry-leading Dual-Core Intel Xeon processor in the same power envelope.”