Energy savings are based on 85 kWh per year for each desktop PC and 301kWh per year for each server using 80 PLUS. For PC Energy savings, the baseline is the Intel required efficiency levels for power supplies. Savings per unit is the difference between consumption between the Intel required and a minium qualifying 80 PLUS power supply - one that is precisely 80% efficient at all load levels.

Energy cost savings are based national average of 8.68 cents per kWh for the commercial sector. Source: Energy Information Administration, Form EIA-826, "Monthly Electric Sales and Revenue Report with State Distributions Report."www.eia.doe.gov

Environmental Savings use U.S. average of 1.514 lbs Carbon Dioxide per kWh delivered.
Source: U.S. EPA E-Grid, 2002, EIA Electric Power Annual 2001, 2003. http://www.epa.gov/cpd/pdf/brochure.pdf
CO2 equivalencies based on data from the U.S. Climate Technology Cooperation Gateway.www.usctcgateway.net/tool/index.cfm