Downblower (top-down cooler)
This type of cooler is not very efficient at first glance, as the airflow is not aligned with a housing opening, but is aimed from top to bottom towards the motherboard. However, the nice side effect of cooling board components puts the usually slightly lower cooling performance and the high fan noise back into perspective. The worst example are Intel’s boxed coolers and AMD’s older ones, which are usually just enough for cooling, are extremely noisy and often can’t avoid a CPU collapse in the summer. However, the rest of the components, the housing and the installed fans also play an important role in this type of radiator.
A notable exception are AMD’s new Wraith coolers, which have at least acceptable performance and noise development behavior. This is not the crown of evolution, but in many cases it is enough. At least for the beginning.
The possibilities of assembly
Let us first consider the starting position, which is always praised:
Optimization by rear and/or sidewall fans
A rear fan can suck all the swirled and warm air well:
The often scolded sidewall fan is useful for downblowers of all kinds, as cool air is blown directly into the suction direction. The remaining components also benefit from this fan, so that a sidewall fan can pay off:
Either you use housing with a large and slow rotating fan or you rely on quiet (and maybe even effective) 12cm fans.
The lack of support from an active airflow shows the next picture. A rear fan is missing and the graphics card disturbs the airflow even further.
- 1 - Einführung und Übersicht
- 2 - Unter- oder Überdruck? Wir wägen ab!
- 3 - Netzteilpositionierung: Oben oder unten?
- 4 - Airflow: Towerkühler senkrecht montieren
- 5 - Airflow: Towerkühler waagerecht montieren
- 6 - Airflow: Beliebte Montagefehler
- 7 - Airflow: Downblower-Besonderheiten
- 8 - Airflow: Festplattenkühlung
- 9 - Airflow: Grafikkarten richtig belüften
- 10 - Gehäuselüfter: Wissenswerte Grundlagen
- 11 - Unangenehm: Körperschall und Resonanzen
- 12 - Lüftersteuerung, Zusammenfassung und Fazit
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