Analysis: a hexagonal grille is no match for a circular one, in any way

Cooling, Extra tests, Fans | | Ľubomír Samák

Results: impact on airflow, pressure and noise

Why do cases and PSUs almost always have impractical cut-outs in the grille in front of fans for air passage? Whether this is due to indifference to an all-round honest product or ignorance of how inefficient a solution it is, remains a mystery. But we have devised a comparative test which refers to drawbacks of the hexagonal grille. Compared to the non-restrictive circular ones made of wires, the differences are significant.

Test results

The rear of the tunnel ensures, among other things, that the air supply to the anemometer fan is laminar


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