COOLER MASTER codice SAF-B83-E1-GP
VENTOLA CLM X CASE 80X80X25 25DBA LED FAN 2500RPM/32 CFM BALL
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COOLER MASTER codice SAF-B83-E1-GP
VENTOLA CLM X CASE 80X80X25 25DBA LED FAN 2500RPM/32 CFM BALL
80x80x25mm LED FAN 25 DBA/2500 RPM/32 CFM ballSAF-B83-E1-GP is an ordinary fan - it offers no supernatural technical features. It has a usual 80x80x25 mm case (4 stator carriers), 7-blade impeller (nominal speed - 2500 rpm), and combined mechanics of budget quality (simple sleeve bearing plus rolling bearing).
However, budget origins of SAF-B83-E1-GP do not negate its neat impeller with good aerodynamic parameters designed to improve noise characteristics: sweep and lean blades, chord - 20 mm at the hub and 30 mm at the tip, chord-pitch ratio - 1.25 at the hub and 1 at the outer diameter, angles of attack - 45° at the hub and 30° at the outer diameter, hub-tip ratio - 0.46, tip clearance - 2 mm.
In practice, possessing aerodynamically well-balanced impeller, the SAF-B83-E1-GP demonstrates good performance in the standard mode as well as at 1500 rpm. It's slightly outperformed by the more expensive SAF-S84-E1-GP. This model is quiet as well, its noise level is not high for its standard fan speed.
What concerns the electric binding of the fan engine, the budget SAF-B83-E1-GP model is not very good — the control circuit is based on the ATS278 chip (similar to ATS276/277) and lacks smoothing capacitors. It's done to reduce the costs. As a result, the engine is audibly popping.
