Fan curve and operating noise (“volume”)
Let’s now turn to what is automatically produced when the waste heat is removed: various fan noises. The measurements in the measuring chamber are, as always, a bit tricky, because you can’t measure anything through the closed side window. Therefore, I turned off the case fans and regulated the AiO to the absolute minimum. Then they get lost grandiosely in the noise carpet of the Sapphire Radeon RX 7900 XT 20GB. Normally I do this with a silent system in the chamber, but I didn’t want to deprive you of the coil beeping, nor the somewhat fluctuating regulation of the card.
Now let’s look at the fan curves first and we’ll understand why I couldn’t measure this to an adapted fan speed in the chamber. Because we again see an extremely jittery curve here, which reacts very nervously to all load changes. Manufacturer could improve here, because you can definitely perceive it
But what does the measurement for the Sapphire Radeon RX 7900 XT 20GB reveal then? You can see nicely from the frequency analysis how the fan’s speed changes (motor peak), so the operating noise is a from-to story that is around 36 dB(A) in the middle in the long-term measurement (SPL Slow). This is acceptable, but not ultra-quiet.
Coil Whining” Noise
However, we still have to talk about one point and that is the annoying coil whine. I already wrote in the measurement of the load peaks that the cards perform an extremely jittery happy dance, which you can also hear. Especially since the coils used are good, but not extra class. You can see the “buzz” as a straight line at about 250 Hz and in the high frequency again as a “chirp” at 5 to 6 KHz. This is not dramatic, but you can definitely notice it at higher FPS numbers or hard FPS changes.
- 1 - Einführung, technische Daten und Technologie
- 2 - Teardown: PCB und Komponenten
- 3 - Teardown: Kühler und De-Montage-Tips
- 4 - Summe Gaming-Performance WQHD (2560 x 1440)
- 5 - Summe Gaming-Performance Ultra-HD (3840 x 2160)
- 6 - Details: Leistungsaufnahme und Lastverteilung
- 7 - Lastspitzen, Kappung und Netzteilempfehlung
- 8 - Temperaturen, Taktraten und Infrarot-Analyse
- 9 - Lüfterkurven und Lautstärke
- 10 - Zusammenfassung, Fazit und Verlosung
1,249 Antworten
Kommentar
Lade neue Kommentare
Urgestein
Veteran
Urgestein
Mitglied
Mitglied
Mitglied
Mitglied
Mitglied
Mitglied
Mitglied
Urgestein
Veteran
Neuling
Mitglied
Mitglied
Urgestein
Urgestein
Neuling
Veteran
Alle Kommentare lesen unter igor´sLAB Community →