Especially with fanless PSU components would have to be very high quality ones and those are never cheap.So, reccommendations for a new psu please, as quiet as possible (fanless?), modular, and cheap as possible (this is coming out of my 24" screen budget).
Even more when blocked exhaust fan forces PSU to suck in most of the heat produced:
http://www.coolermaster-usa.com/upload/product/2708/gallery/full/4.jpg
You should take out Dremel and replace that ridiculous stamped mesh with normal finger guard.
Graphics card is a passive HD3450, ...uld get it, the HD4670 was horrendously loud.Those tiny coolers with even smaller fans are always bad... especially when case is acoustical failure and big empty zero.