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Blower/radial fans really have two advantages: lots of static pressure, and low Z-height. Their drawbacks still make them a poor choice for most use cases though: low airflow, high RPM as a necessity to move any real amount of air, high power requirements, high noise levels (partly due to high RPMs, partly due to needing double ball bearings for longevity), and the fact that they need a shroud/airflow guide to work at all - otherwise they just vaguely throw air around in all directions. They're only really suited for applications where you don't have another choice, such as laptops or other space-restricted builds. They are also relatively well suited for specialty radiator use with thick, low Z-height radiators where using an even noisier server style high pressure axial fan wouldn't be an option (like in Asetek's recently launched PCIe-slot mounted GPU AIO)

[QUOTE="Valantar, post: 202979, member: 5738"] Blower/radial fans really have two advantages: lots of static pressure, and low Z-height. Their drawbacks still make them a poor choice for most use cases though: low airflow, high RPM as a necessity to move any real amount of air, high power requirements, high noise levels (partly due to high RPMs, partly due to needing double ball bearings for longevity), and the fact that they need a shroud/airflow guide to work at all - otherwise they just vaguely throw air around in all directions. They're only really suited for applications where you don't have another choice, such as laptops or other space-restricted builds. They are also relatively well suited for specialty radiator use with thick, low Z-height radiators where using an even noisier server style high pressure axial fan wouldn't be an option (like in Asetek's recently launched PCIe-slot mounted GPU AIO) [/QUOTE]

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