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 approximately 1200 to 1250 rpm are audible, but are manageable. That’s very positive at first. With OC, it’s already just under 1300 rpm, which you can hear more clearly.
Measurement of the NVIDIA GeForce RTX 4080 Super FE 16GB
However, the frequency analysis shows very nicely how the sound carpet is divided up. The 36 dB(A) in the gaming loop (Cyberpunk 2077 in UHD) is bearable, but two things bother me a little with the Founders Edition. The somewhat grumpy fan motor is louder in the built-in case than in the open benchtable, because the slot bracket is the acoustic quick connector for the low tones around 140 Hz. Then we also have the buzzing of the coils.
I added the Torture Loop for a good reason. We still see an overlay at around 300 Hz and further spikes in the lower mid-range. The range between 1 KHz and 2 KHz then shows the fan noise (tear-off and detachment noise). The low-frequency components alone cause the sound pressure level in the housing to rise to around 37.4 dBA(A). This is still bearable, but you can definitely hear it.
Measurement of the MSI GeForce RTX 4080 Super Expert 16GB
The sound is much more relaxed, even if the level is also well above 30 dB(A). Compared to the Founders Edition, the fans are absolutely inconspicuous in the low-frequency range and there is also no resonance amplification in the case. NVIDIA should really scrutinize the fans used, because there is a visibly (and audibly) less tense way.
Audio samples of the measurement
Both of the following recordings were amplified equally, but not normalized, in order to preserve the differences in level. Let’s start with the Founders Edition first and you will of course hear the humming bass and the voltage converters.
The MSI card, on the other hand, has a more pleasant sound and is a tad quieter, which is certainly also due to the lack of a “speaker function” in the low-frequency range.
Coil noises: “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 perfectly usable, but the rest of the card is “too quiet” to mask this. As always, you can find out more about this topic here:
- 1 - Introduction, technical data and technology
- 2 - Unboxing and technical details of both cards
- 3 - Test system and measuring equipment
- 4 - Teardown: PCB and components
- 5 - Teardown: Cooler and fans
- 6 - Material analysis: NVIDIA RTX 4080 Super FE 16GB
- 7 - Material analysis: MSI RTX 4080 Super Expert 16GB
- 8 - Gaming-Performance WQHD (2560 x 1440)
- 9 - Gaming Performance Ultra-HD (3840 x 2160)
- 10 - Gaming Performance DLSS vs. FSR
- 11 - Gaming performance with Frame Generation
- 12 - Latencies and lags
- 13 - Workstation graphics and rendering
- 14 - Details: Power consumption and load balancing
- 15 - Load peaks, capping and power supply recommendation
- 16 - Temperatures, clock rates and infrared analysis
- 17 - Fan curves, noise level and audio samples
- 18 - Summary and conclusion
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