kfoshaug Posted January 31, 2013 Share Posted January 31, 2013 Hi all! First post here. I have just purchased two AX860 PSUs based on excellent results internet reviews. The following was decisive: Quiet fanPossible to set a mode so that the fan does not even start up on lower loadsAX860 is overkill for my usage, but that means fan will most likely not turn on at all, and therefore the PSU should be silentI evaluate all my PC components mainly on silence and will gladly pay extra for it I was excited to replace my aging and rather noisy Seasonic PSU (I had an unfortunate choice of model back in 2004) with a new AX860. But imagine my disappointment when I find that the electrical noise (rather high pitch whining) emitted from the AX860 was more unpleasant than the fan noise from the old PSU. The case I am using is Antec Solo II and therefore the PSU is located at the top of the case with the fan opening upwards and is therefore the most exposed component in this case. The other AX860 was used in a new build for a family member and I notice the electrical noise less since the placement of the PSU is at the bottom of the case. And also the room where it is placed has more natural background noise so I did not notice anything until I installed one in my own PC. But the same whining sound is there in both PSUs. The hardware I am using is Asus P8Z68-V Pro with i5-2500K and P8Z77-I Deluxe/WD with i5 3570K. Graphics cards are integrated HD2500 / 4000 and dedicated PowerColor fanless HD5750 and Asus DCUII 660 Ti TOP. I have tried the following without noticeable effect: Interchange the PSUs between the builds (and therefore also different houses)Turn off C1E and speedstep + a whatever power management features I found in Bios.Overclock or not overclockTried both with iGPU and two different dedicated GPUsHigh load (Prime95 with 3DMark) or normal load, I cannot notice a difference in noise depending on load I am left with different thoughts and questions. Is the AX860 not targeted for silence enthusiasts? Or is there something wrong with my expectations for those PSUs? If I get 2 of them and they both have more or less same electrical noise, what is the chance RMA’ing will help me? I have no problem with the sound of airflow from a good quality fan. But a whining electrical sound just does not cut it for me. I already have an approved RMA request for one of the PSUs (before I knew both made the same noise). I am sure I will try that but would not mind some input on this while I evaluate my options. What do you think? Any other ideas on what to try? Would highly appreciate any feedback :idea: Link to comment Share on other sites More sharing options...
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