Intel claims that direct current power supply units, the ones that don’t need AC power, could save an extra 14% over existing high-efficiency PSUs. Intel even demonstrated a prototype DC PSU and proclaimed that it had an efficiency of greater than 90%. Traditional power supplies are only 55 to 70% efficient and that up to two-thirds of the power going into a system goes up as waste heat. Intel has been working on more efficient single voltage rail PSUs that are 90% efficient. Intel hasn’t said if it plans to move direct DC power supplies down to the desktop level.

Intel claims that direct current power supply units, the ones that don’t need AC power, could save an extra 14% over existing high-efficiency PSUs. Intel even demonstrated a prototype DC PSU and proclaimed that it had an efficiency of greater than 90%. Traditional power supplies are only 55 to 70% efficient and that up to two-thirds of the power going into a system goes up as waste heat. Intel has been working on more efficient single voltage rail PSUs that are 90% efficient. Intel hasn’t said if it plans to move direct DC power supplies down to the desktop level.