My quiet computing kit consists of LR Storm G4, BIP2, case is an Antec Sonata:
Key noise reduction elements:
- Removal of stock 120 exhaust fan, true ATX LOL.
- Replacing stock power supply with Enermax Noisetaker
- Pumping duties via submerged pump.
- Low RPM fans (papst) on the rad (natch)
While the PS is not fanless it is certainly quieter then the stock solution and maintains exhaust flow in the absence of the case fan, which I believe offers overall greater benefit noise wise. Enermax did a nice job with the Noisetaker series IMO.
I prefer submerged pumps for silence, even with my ear within a couple inches I cant tell its on due to noise isolation offered by the res.
I used to run nosiy fans and pushed the oc's with no observable benefit of the extra cpu cycles. Today I much prefer using the same gear for the noise benefit. Silence is golden.