The AX1000's platform is the same one used in Seasonic's top-notch Seasonic Prime Titanium (and Platinum) models. It is built using high-quality components from companies like Vishay, Infineon, and Nexperia. In addition to its Japanese electrolytic caps, the secondary side also features a number of polymer capacitors from FPCAP and Chemi-Con. the sound is loud, but the fans do get loud enough so you only can hear it if you know it or look out for it, but if I set Heaven to minimum settings and lower resolution (1920x1080), STMicroelectronics STU6N65K3 (650V, 3A @ 100°C, 1.3Ω) Infineon BSC0906NS (30V, 40A @ 100°C, 4.5 mΩ) If you compare both averages, you might be tempted to say : "Scenario 1 is quieter than Scenario 2". But with Scenario 1, you inner ear is permanently damaged. Could it be the Riser-Cables (vertical mounting) of the GPU, or the CableMod Cables that cause all these problems ?

Sure the better power supply on paper will give better results .. but they are way above the requirement of the PC hardware. First of all sry for my bad english, but its not my first language, and secondly I am new to the Corsair Forum, because I would rly need some help and your opinions. Your pre-recorded DVD movies will look sharp on the Sony, with realistic colours - particularly with progressive scan via the component video connection. And with audio the RDR-HX1000 really impresses, creating the best surround soundstage in this group via the optical or coaxial outputs. Open Water was even more menacing here than elsewhere in this group test, making the RDR-HX1000 the best home cinema sound machine this month. CDs also sound good - better than on many midrange CD players. And some people do believe that buying a bit higher of a wattage will help it last longer. Whether true or not probably depends on a lot of factors like how the fan behaves and efficiency and other stuff.Scenario 2 : over the span of an hour, I constantly make very little noise, bearly perceptible (18dBA). The average noise output will be 18dBA.

Thanks for your comment/answer again and I will try out all the original cables over the Christmas period, because it will take some time to destroy my cable management and change it all. That said, the problem could be the cables. Could be the PCIe riser. Any kind of signal noise can impact switching frequencies. Best way to troubleshoot that is to try the original cables and to try the PC without the riser. I got an RTX 3090 FE and it sounds like a mini rc place is going around in my case. Sounds like a tiny place or race car is running around and the sound changes with the power consumption and FPS. Under 300w no buzz, over 300w - Buzz. Even one of my Plus 80 (below bronze) powersupply lasted 7 years without any issues, I only buy Seasonic by the way and Corsair. There is a switch that lets you choose between one +12V rail or multiple +12V rails. Across the HXi family, this is achieved using Corsair Link software. However, since the HX models don't have a digital interface, a different approach had to be used.Still, expensive PSUs have better build quality so the PSUs themselves are going to last longer, and if they're designed properly like this one they can be very quiet. Cheap PSUs can be loud. should be enough for a 3090. And "coil whine" is not a side effect of demanding too much power. Unfortunately, newer and newer efficiency requirements require lower and lower switching frequencies that can often drop down into the audible frequency range. I never had any power supply fails all my life ... last time I changed a power supply was for low voltage haswell issue and not because my old one died. Scenario 1 : over the span of an hour, I do not make much noise for 59 min (15 dBA), and then for 1 min I make as much noise as an airplane (130 dBA), the average noise output will be (59x15 + 130x1)/60 = 16.9 dBA. Over the last three months I built a new personal system, with the help of a friend who has done dozens of systems and knows what he does.