it's a 3412NGL. since i'm in north america, i tend to prefer the availability and price of panaflo's versus papast and my subjective performance is nearly identical, esp. at low voltaging. i bought a large combination of both fans brands in all different sized to compare them myself. after reaching my subjective conclusion, all my new fans have been panaflo's when it made sense.
i have not compared it to any other off the shelf power supplies. all my other power supplies (i have like 5 of them in different computers- sparkle, deer, generics, etc.) have all had their 80mm exhuast fans replaced (they didn't have intake fans) with panaflo's @5V. these are all nearly silent, esp. at more than a couple feet.
the difference with my true power (TP) mod from my other PSs, is that it's a 92mm fan, but it's not running on 5V. it's running on the temp controller fan header, which starts at around 4.5V-5.5V. it settles around 7.5V at 23 degree C ambient, and around 9V when it gets really hot in my room in the summer, at around 33 degree C. i have 3 more fans in the computer: (1) 120mmx38mm panalfo exhaust fan on the TP fan temp controlled header, (1) 120mmx25mm JMC low-RPM fan @5V at the bottom intake, and a 92mm fan over a swiftech MXC462 (a good but expensive heatsink- there are cheaper and even better solutions than the swiftech for low-noise as mike has shown in his articles so i don't recommend it as a first choice) mounted on a open-air 80mm-to-92mm mounting adapter, also running on the fan temp controlled header.
i can't hear my computer from the chair a couple feet away, _except_ for the damn whine of the IBM GXPs. until i replace or muflle the drives, it is pointless to try silence fan noise anymore (if even needed) as the fans cannot be heard at all over the HDDs idle whine. when my drives go into sleep mode, though, i can't hear my computer over ambient noise.
i bougt my HDDs before i got into this whole "silent" thing. like many here, i started out just trying to quiet my computer done a little bit, and now i'm bothered by even relatively small computer noises. sound familiar?