Fan curve and operating noise (“volume”)
Now we come to what is automatically generated when the waste heat is dissipated: various fan noises. As always, the measurements in the measuring chamber with the second system are a bit tricky, because you can’t measure anything through the closed cover. That’s why I later set the fans manually to the values that I measured during gaming and torture in the closed case and leave the setup open. The 1580 rpm in 220 watt mode are slightly audible. That’s still quite ok for now. With OC, it’s already just under 1700 rpm, which you can hear more clearly.
But what does the measurement show for the NVIDIA GeForce RTX 4070 Super FE 12GB? I have only analyzed the 220-watt version here today. The frequency analysis clearly shows how the sound carpet is divided up. At 37 dB(A) in the gaming loop, this is not yet an issue, even if we can again see the harmonics of the coil and capacitor buzzing in the range from approx. 4 KHz. You can see very clearly that the whole thing is already gnawing away at the limits of the cooler. Not much more is possible.
Coil noise: “Coil whining”
We still have to talk about one point and that is once again the annoying coil whining. I already wrote in the measurement of the load peaks that the cards perform an extremely jittery dance of joy, which you can also hear. Especially as the coils used are usable but not top class and the seven phases have to work hard. As always, you can find out more about the topic here:
- 1 - Introduction, technical Data and Features
- 2 - Test System and Equipment
- 3 - Teardown: PCB, Components and Cooler
- 4 - Material Analysis and a Surprise
- 5 - Gaming Performance FHD (1920 x 1080)
- 6 - Gaming-Performance WQHD (2560 x 1440)
- 7 - Gaming Performance Ultra-HD (3840 x 2160)
- 8 - Gaming Performance DLSS vs. FSR
- 9 - Gaming Performance Frame Generation
- 10 - Latencies in Detail
- 11 - Workstation Graphics and Rendering
- 12 - Power Consumption and Load Balancing
- 13 - Transients and PSU Recommendation
- 14 - Temperatures, Clock Rate and Infrared Analysis
- 15 - Fan Curves and Noise
- 16 - Summary and Conclusion
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