Xeon w5580 (3.2 GHz) - > $1600;
Xeon x5570 (2.93 GHz) - > $1386;
Xeon x5560 (2.8 GHz) - > $1172;
Xeon x5550 (2.66 GHz) - > $958;
Xeon 5540 (2.53 GHz) - > $744;
Xeon e5530 (2.4 GHz) - > $530;
Xeon e5520 (2.26 GHz) - > $373;