I have three 120x38mm Yate Loon D12SL-12D on my PA120.3. They are 1350rpm but on a fan controller and turned down to 700rpm. Still good cooling but quiet operation as well. The fans are'nt too bad at full chat either.
Does yours whine when they are lowered? i was using 2 of them for my rad, but lowest i could have them running was 1000rpm, as they would whine a lot at lower speeds, maybe it was becuase i was using the same mobo connector for both dunno.
Either that or i just had 2 crap ones, they are good fans though, and cheap too. Think i may retest them using a fan controller this time, and 1 fan per channel to lol.
Well money is tight atm, so may well be going Yate Loon 2200RPM and fan controlling them down to 7v. £20 for 4 isn't bad going including postage, just a shame OcUK don't stock them.
Any idea how loud they will be?
Not that loud if undervolted, but you really won't need that kind of speed fans for your rad, i would say max 1400 - 1500, and even with them have them running slower, the thick rads work extremly well with slower fans so u basicly never have to have them running fast, even when doing extreme overclocking.
My fans are never over 600rpm even when im folding, in summer i may have to run them abit faster, hence why i have 1400rpm ones, but generally they never get anywhere near 1000rpm ever, as i have them set to ramp up automaticly.