Silentmaxx Fanless 400W MX460-PFL01 power supply

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In keeping with the color scheme, the bonus case fan is clear blue.

The bonus 80mm case fan is branded with Silentmaxx' logo, and a google search of the model number did not prove to be helpful in discovering the OEM. The current rating indicates a medium-low speed fan, and a quick listening test showed this to be the case. The noise level was quite acceptable, even at full speed. Quieter fans are available, but the compromise between airflow and noise was surprisingly good for a fan that was tossed in as an extra.

On the other hand, the fan felt a bit flimsy and brittle, as though it would be easy to break. It also comes with a two-pin header that will not fit on a three-pin motherboard headers without modification.


All cable sets were sleeved, and all of the IDE plugs had grips for ease of removal.

  • 18" Sleeved cable for main 20+4-pin ATX connector
  • 14" Sleeved cable for auxiliary 4+4-pin 12V AUX connector
  • 15" Sleeved cable for 6-pin PCIe connector
  • 23" Sleeved cable with two SATA drive connectors
  • 27" Sleeved cable with two 4-pin IDE drive connectors and one floppy connector
  • 26" Sleeved cable with three 4-pin IDE drive connectors
  • 17" cable with a thermally controlled, nonstandard 2-PIN fan header

The individual cable sets seemed a little shorter than usual. This was a complaint we had with the FSP Zen as well, but we were pleased to see that the problem seemed less severe with the Silentmaxx than the FSP Zen. In particular, the main ATX cable is a much more standard length in the Silentmaxx.

Another difference from the FSP Zen is the inclusion of what appears to be a fan header. Unfortunately, the tiny two-pin header does not match any of the fans that we could find in the lab, nor does it match the fan header on the bonus case fan. For all intents and purposes, it appears to be useless, which made us wonder whether we had correctly identified its purpose. A quick chat with Dave Williamson at Quiet PC USA (our supplier) confirmed that it is meant as a fan header:

"The 2-wire connector is designed to operate a separate case fan if needed. It is temperature controlled from the PSU. Most of the time the 2-pin connector will not have power, however when the PSU becomes extremely hot it will activate the auxiliary fan connector providing power to operate a separate case fan."

Apparently, the header is meant to power an emergency backup fan. Hopefully, the next revision will replace the connector with one that is a little more standard ¬ó perhaps one that works with the included case fan.

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