EXPIRED Mellanox InfiniBand SX6018 - Switch - EMC only - $300 OBO


New Member
Nov 5, 2021
I wanted 40x28mm fan on the power supplies so I tried out the Delta FFB0412HN:

It fits perfectly with the existing screws, and at 6500 RPM it does not trigger any errors (in software or on the front panel). It moves a lot of air though, way more than needed even if you were to really load the power supply, and the noise is still a bit annoying if you're working right next to it in a quiet room. I actually wanted the 5000 RPM FFB0412MN which I think would be a much better choice but it was out of stock with a couple months lead time at Mouser.

For reference:
RPMStatic Pressure (mmH20)Airflow
FFB0412HN (28mm)65006.3010.59
FFB0412MN (28mm)50003.768.05
Noctua NF-A4x20-FLX (20mm)50002.265.53
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