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certification standards, the new computer specification will save consumers and businesses
more than US$1.8 billion in energy costs over the next 5 years and prevent greenhouse gas
emissions equal to the annual emissions of 2.7 million vehicles.
In order for a computer to be Energy Star certified, it must meet the requirements
outlined in Table 8-2.
You can find your cost savings from using Energy Star–rated computers by using the
savings calculator at the Energy Star website which you can access through Link 8-2.
This tool is shown in Figure 8-2. To find specific models of Energy Star-rated computers,
use the finder tool at Link 8-3. Some sample output is shown in Figure 8-3. To find specific
laptops, follow Link 8-3.

Product Type Tier 1 Requirements
Desktops, integrated computers, Standby (Off Mode): <= 2.0 W
desktop-derived servers and Sleep Mode: <= 4.0 W
gaming consoles Idle State:
Category A: <= 50.0 W
Category B: <= 65.0 W
Category C: <= 95.0 W
Notebooks and tablets Standby (Off Mode): <= 1.0 W
Sleep Mode: <= 1.7 W
Idle State:
Category A: <= 14.0 W
Category B: <= 22.0 W
Workstations TEC Power (P ): <= 0.35 × [P + (# HDDs × 5)] W
TEC Max
Note: Where P max is the maximum power drawn by the
system, # HDDs is the number of installed hard drives in
the system.
Efficient power supply requirements Internal power supplies: 80 percent minimum efficiency
at 20 percent, 50 percent, and 100 percent of rated
output and minimum Power Factor 0.9.
External power supplies: Either Energy Star qualified
or meet the no-load and active mode efficiency levels
provided in the Energy Star External Power Supply (EPS)
specification.

TABLE 8-2 Tier 1 Energy Efficiency Requirements Effective July 20, 2007