Silence is golden...

[BoomAM]

Hi.
Ive been using my Laptop all day as my primary system, with a USB mouse/keyboard plugged into it.
Its near silent. And ive fallen in love with the silence.

Im waiting for OCUK to get back to me about my broken mobo (it best be replaced with a board that meets the requirements of my original board [passive cooling, sata2, DC support]).
Anyway.
What ways can i use to make my system as quiet as possible?

Specs, noise wise are:
SI-120+Akasa Silent 120mm.
Antec TrueBlue 480W Rev.1.
VGA Silencer on X800XL.
3x Hitachi SATA2 HDDs.
2x Coolermaster 4in3 cages+stock fans.
1x Coolermaster Stacker Stock 120mm exhaust.
1x Coolermaster Stacker Stock 80mm exhaust.
Case is CM Stacker.

Ive got a feeling that most of the noise is coming from the PSU, as when anything else in the system is unplugged to stop the noise, theres no change in noise level.

Ideas/Tips?

Thanks in advance all.

 

[BoomAM]

You could probably lose the 2x fans in the drive cages

Not an option. I get a 30*c drop in HDD temps with those drive cages. I could replace the fans though.

Another thing to try would be disconnect all the fans and HDDs and see how noisy the system is, then attach the HDDs with no fans to see how noisy they are to see if anything needs to be done about those.

Already tryed all that. Seems to be the PSU.

 

[BoomAM]

What are the Antec NeoPower Modular PSUs like?
Ive heard good things about them.