Intel - Processor upgrade - 1 x Intel Xeon E5405 / 2 GHz - 1333 MHz - L2 12 MB (458579B21)
Intel - Processor upgrade - 1 x Intel Xeon E5405 / 2 GHz - 1333 MHz - L2 12 MB (458579B21) - 2 GHz Bus Speed ​​1333 MHz Processor upgrade - 1 x Intel Quad-Core Xeon E5405 / 2 GHz (1333 MHz) - L2 12 MB (2 x 6MB (6MB per core pair))