@PepperTheVixen Yes, and I do recommend people to get high flow, low resistance, good quality, allergen filters like Car A/C inlet filters and combine them with like 200mm #Noctua #Fans into Cosi-Rosenthal - Boxes to maximize airflow and still yield excellent HEPA ratings without a lot of noise.
Obviously that will be a bit more tricky and require more DIY skills but on the flipside should yield excellent results.
Soo the #Noctua fans now arrived and I installed everything. And - well - this did make the #server way quieter.
For 10-20 seconds after being powered on. Then CPU2 went to 70C. However all of the other temps are in check now.
And now it is way louder (as these fans have a higher max RPM).
Think the main issue was the airflow of this #Supermicro #H11DSi just being extremely shit to manage. You basically cannot avoid pushing hot air from CPU1 into CPU2…
The Forbidden Noctua Interview: Fan Engineering Technical Discussion & Challenges

Noctua is Back: NH-D15 Gen2 & 8 Years of Fan Development

Ich lass mir jetzt für den #Noctua NH-D14 (Kauf: 2011, damals Sockel AM3) schon das zweite gratis Upgrade-Kit zusenden: Das erste war auf AM4 in 2020, das nächste wird auf AM5.
Schon unglaublich, dieser Service.