Ten ATX Power Supplies Compared

This content was originally featured on and has been converted to PC Perspective’s website. Some color changes and flaws may appear.

Update 12-30-03: The following sections have been updated:
  • Testing – Power Factor (added more info)
  • Testing – Efficiency… (corrected errors)
  • Conclusions – Summary Table (updated efficiency values)

Ryan and I have been collecting ATX power supplies for the past several months. is now ready to bring you our first head-to-head comparison of ten PC power supplies in the 400 to 500+ watt range.  We have included many of today’s popular units along with a few you may not have seen before.  Six of the power supplies were donated by the manufacturers noted above while the remainder came from my personal stock.  Here is a group photo and a list of the power supplies we will be comparing.

Ten ATX Power Supplies Compared - Cases and Cooling 107

  • Aerocool AeroPower II 420 watt
  • Antec TruePower 480 watt
  • Antec TrueControl 550 watt
  • Enermax Whisper 431 watt
  • PC Power & Cooling Silencer 400 watt
  • PC Power & Cooling Turbo-Cool 510 watt
  • Raidtronics Raidmax 400 watt
  • Vantec Stealth 470 watt
  • Vantec Ion 400 watt
  • Zalman Noiseless 400 watt
« PreviousNext »