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Zalman ZM300A-APF 300W Switching Power Supply Review



Test System:

  • Intel Pentium 4 2533MHz
  • ASUS P4S533 Motherboard
  • AOpen GeForce4 Ti4200 Video Card
  • Memory 512MB DDR333 (Samsung)
  • Maxtor 60GB 7200 ATA133
  • Four Case Fans
  • Sunbeam Cold Cathode Light
  • Running Windows XP Professional
  • All inside an Aspire Turbo Gamer case
  • The voltages were too unstable for me to take an accurate screenshot on full load, so I ended up capturing the results only when the computer is idle. I used Motherboard Monitor to take these readings.

    Readings on the Enermax 300W Whisper Power Supply

    Readings on the Zalman 300W Quiet Power Supply

    In terms of accuracy, I'd say that the voltages are pretty accurate, with the exception of the +12V line. By the same token, my Enermax readings of that line is also lower than the rest of the other readings... it may have something to do with my current configuration, but I can't say for sure. I've shared all of my cables evenly to prevent any particular rail from becoming overloaded. It could be the CPU itself, which in turn may be an indicator for me to pickup a 350W power supply, or even a 400W or 450W, to be on the safe side.

    In terms of noise, the quietness is incredible! I purposely turned off all my case fans, leaving only the fans on my video card, CPU, and the power supply itself, and the system is pretty much mute. Only if I deliberately concentrate on the noise will I hear it then. Overall I am quite pleased with the results.

    1. Introduction & Specifications
    2. Testing & Conclusion
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