This ROI calculator is a cost comparison for a highly virtualized solution, using multiple 1GbE connections versus a dual port 10GbE implementation. In the 1GbE solution we use in each server two Intel® Gigabit ET Quad Port Server Adapters, in addition to two LOM connections with a total system bandwidth of 10 Gb. This is then compared with a 10GbE solution, using one Intel® 10 Gigabit AF DA Dual Port Server Adapter and a total system bandwidth of 20Gb. These adapters are connected to a top-of-rack 10GbE switch using passive direct attach twinax coax cables.