e5405 versus x5355
It better to use Quad-Core Intel Xeon Processor 5400 Series
E5405....E5472, X5450......X5482
and now you can use the new Intel Core 2 Extreme Processor QX9775
Architecture 45 nanometer technology
L2 Cache 12 MB
L3 Cache N/A
Clock Speed 3.20 GHz
Front Side Bus Speed 1600 MHz
Package FC-LGA8
Chipset Intel E5400 Chipset
Boards DX5400
Slot/Socket Type LGA771-compatible only with the Intel Desktop Board DX5400 supporting a dual-socket configuration
Pin Count 771