The Seasonic Magflow was the first fan that I reviewed using the Long Win LW-9266 Fan PQ performance measurement apparatus, so I though to re-test it, using my current methodology which has several improvements over the initial one, including frequency analysis of the output noise.
The Seasonic MagFlow 120mm starts from $40 for a single piece and goes up to $113 for a 3-pack bundle. This is far from an affordable fan, costing more than the mighty Phanteks T30-120. Besides high build quality and fluid dynamic bearing, the 120mm MagFlow features a magnetic connection system that allows for the easy connection of multiple fans without the need for cabling.
The power cable attaches to the fan magnetically, so it is safe to say that these fans are fully modular. Thanks to a pretty strong magnet, the connectors easily snap in place.