@Cass:
First I must just say that I appreciate your opinion about towering the A4000D

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May I ask what stuff you have put in your A4000D to exceed the ratings of the original PSU.. as an A4000D owner, I am thinking of the limited amount of space inside the case for expansions

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One idea would be to take the inner contents of a 200W+ MicroATX power supply and mount that inside the original A4000D PSU instead of the original inner contents... provided that there is enough room for it. I dont have the possibility to compare the measurements right now, so I dont know.
/Patrik