New PSU is here and it seems like it's just what I needed all that time. Good things do come at a price.
It has an Eco mode which means until it gets hot it will not turn the fan on. I shouldn't need that unless I am gaming hard, and that rarely happens. On very close listen it has some 'ticking' inside, but it's only audible when literally I put my ear to it, so it won't bother me.
Testing:
Rear of the case before and after:
Inside:
Next update soon!