How loud is the fan on this power supply?

The item I picked up was terribly loud. I couldn't tell if the fan came from a bad dye-casting, or if it was off-balance, but two of the blades kept hitting the grill making too much noise, and even sometimes jamming up.

Questions & Answers: 400W Power Supply Upgrade for Dell Slimline Optiplex 390 790 7GC81 6MVJH

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400W Power Supply Upgrade for Dell Slimline Optiplex 390 790 7GC81 6MVJH

Please make sure the Part Number below matches. There are different versions. This is for DT or Desktop.
1 x Main connector (20+4Pin) This works with both 20 pin and 24 pin main connectors!
1 x 12V P4 connector, 2 x 4-pin Molex Connector, 2 x SATA (Serial ATA) connector
400 Watts - This is an upgrade with additional wattage for additional devices, this replaces lower wattage power supplies
Other Compatible Part Numbers: CYY97, 3MV8H, 6MVJH, 3MV8H, L250NS-00, PS-5251-08D, DPS-250AB-67 A.

$79^.99 –