I received this today and after powering it up I was blown away at how loud it is. The mrs will never tolerate this lol and neither will I, it is located in our bedroom so needs to be pretty quiet. The PSU fan seems to be the main culprit, as anyone here replaced it with a Noctua NF-A4x 10mm or 20mm fan and did it make much difference? Only £12 on Amazon, the 20mm version seems to be quieter. I don't want to invalidate the warranty so would plan on powering it by the sata connector, as I will only be putting 1 HD in it.