VMware has launched an online TCO Calculator (free).
With this tool you can roughly estimate what the return on investment (ROI) when you implement VMware Infrastructure.
It delivers a detailed report containing possible cost-savings (less low-end servers, less cooling, less powerconsumption).
It is a user friendly tool to help users to get an overview on cost-savings when using VI-3.
The data within the tool is based on customersurveys, experience and recent implementations of VMware Infrastructure.