Help Me Choose: More Efficient Power Supply

Power supply units (PSU) are devices that power a computer. They convert AC power from utilities into DC power used in most electronics.

Dell Precision T1650 offers a standard power supply as an entry offering as well as a more efficient option that draws less power and dissipate less heat from your desktop. Standard power supplies tend to range from 65 to 75 percent efficiency, while more efficient options can improve efficiency that translates into annual energy cost savings for your desktop systems. Higher efficiency power supplies combined with efficient processors, draw less energy and dissipate less heat from your desktop when operating day to day, helping to save you money with reduced power consumption and lower cooling costs.

As a part of Dell's commitment to energy efficiency, Dell is a member of the 80 PLUS program that recognizes manufacturers of any desktop computer containing a PSU that meets the following specifications (and becomes certified as 80 PLUS):

  • 80 percent or greater efficiency at 20 percent, 50 percent and 100 percent of rated load, and
  • True power factor of 0.9 or greater

In addition to efficiency, 80 PLUS requires a power factor of 0.9 or greater. Higher power factor reduces current draw by roughly 50 percent, which means that more computers can be placed on the same branch circuit without the need for costly electric infrastructure upgrades. In new construction situations, smaller and less expensive distribution systems can be constructed when computers using 80 PLUS power supplies are considered in the planning process.

Finally, more efficient power supply options on the Dell Precision T1650 can operate at any input voltage between 90 VAC to 264 VAC.