There is a fan stop, the hysteresis is well solved and the fans only turn when you really need them. While the OC BIOS still has about 1750 rpm, the Silent BIOS’s speeds drop to about 1100 rpm, depending on the case and airflow. This is a more than good value and at least with the Silent BIOS absolutely perfect for really quiet systems. Well done, Powercolor!
By the way, it doesn’t look any different in the stress test.
Betrachten wir die Messwerte noch einmal im direkten Vergleich zur Founders Edition als tabellarische Auflistung:
|OC BIOS||Silent BIOS|
|Fan Speed Maximum||1800 rpm||1164 rpm|
|Fan Speed Average||1759 rpm||1154 rpm |
|Noise Level Full Load||36.8 dB(A)||31.9 dB(A)|
|Noise Level Idle||Fan Stop||Fan Stop|
|Sound Characteristics||rauschend, leichte tieferfrequente Anteile||kaum hörbare Geräuschentwicklung, leichte Resonanzen|
|Coil Whining||sehr gering, nur bei sehr hohen FPS-Zahlen und bei Lastwechseln||sehr gering, nur bei sehr hohen FPS-Zahlen und bei Lastwechseln|
Noise emission and spectogram
The measured 36.8 dB(A) for the OC BIOS are based on the measured approx. 1750 rpm in a closed case. I applied the same gaming load to the open structure in the measurement room, but fixed the fans at approx. 1750 rpm in order to be able to adjust this value as accurately as possible. We can see the result in the spectogram.
Silent BIOS makes it quiet in space. The 31.9 dB(A) are an absolute top value for such an AMD card and it could even have turned out a bit better if it weren’t for the motor noise and the low-frequency resonances when all three fans run at approximately the same speed.
The sound backdrop is pleasant, never disturbing and the card therefore deserves a lot of praise for the cooling performance AND the noise emission!