EDIT/UPDATE:
sorry guys, i stand corrected! for whatever reason, the 4x new SM 2u/3u servers i have here (used, but all newer chassis from past 0-3 years), all have these newer fan holders that have a notch in them, that notch forces you to use 80mm fans with
38mm depth! (else you have to dremmel ALOT of the fan, which i tried, and it worked, but i didnt like it).
So i decided to run to the back and look at 2 x of my older chasis 2u SM servers and low and behold, the fan holder
DOES NOT have that annoying notch! (and these DO fit in my newer 2u/3u chasiss). so with these older fan holders, i can infact use 25mm or 32mm depth 80mm fans, which are offered @ lower amps! (i have spent nearly 4 hours looking at EVERY 38mm depth fan out there, and none are lower than .5 amp, or they are but dont have PWM 4pin.
so anyway, the solution is to be sure to have the NON notched fan holders, and then you can use any 80mm fans! (i already had ordred 6x 80x25mm .3amp fans)
here is a pict of what im talking about:
View attachment 10598
(i already have lots of the SQ power supplies and i didnt want to use a standalone fan controler, and also didnt want to get into using ipmitool to lower the ipmi fan thresholds, so thus i was gungho on finding lower amp fans that i could drop in, as im going to have 6-8x SM more servers in a new rack at my home/office in a server room so i need to control sound.
FWIW, i was able to buy 12x SM FAN- 0126L4 for 34$ shipped (mainly for the holders + they are 0.6amp if i need power in a few slots) + i bought 6 x 0.13a 80x25mm bare fans for $48 from ebay/china (with no pwm head, so ill have to crimp on myself).
with that above, and this new information i just discovered (or had i just listened to yall), i should be able to get sound down.
here are some ebay options ive ordered:
T80T12MS11A7-07A02 0.35a x25mm w pwm head - 13$
NIDEC T80T12MS11A7-07A02 8025 4P 0.35A 4pin PWM server inverter fan #M3786 QL | eBay
9S0812P4F051 12V 0.13A x25mm (maybe bare 4x wire) - $8
San Ace 80 9S0812P4F051 12V 0.13A 8CM 80*80*25MM 4Pin PWM Fan | eBay
thanks
thanks nthu, i actually know this, but for somereason i keep forgetting that (or i dont want to remember it bc they are so expensive @ ~25$ per fan!).
also- FAN- 0125L4 (Sa
n Ace 0.35A 9GA0812P2M0031 ) -- is NOT an option
EDIT: actually neither of those options you listed are options for 2u/3u servers ( as FAN-0104L4 is 25mm in depth, and FAN- 0125L4 is 32mm in depth (both are not 38mm, so would need to dremmel the fan ). FAN- 0125L4 actually would work in the slightly more shallow fan holder it comes in, but the power connector is on the wrong side (on FAN- 0125L4 its on the right, but on 2u/3u chasis the slot has power connector on the left side)
I currently have several 0.6a and 0.58a fans (which i got to replace the often stock 1.1a or 1.2a fans)- these are much quieter , but still not where i want to be (as i have just about all SQ power supplies). I also tried swapping some fans around holders, and found the hard way that on 2u and 3u chasis fans, you MUST use 80x80x38mm fans, as any that are x32mm or x25mm will not fit (or you can try taking a dremmel to the fan like i did but its a mess and not a good fit).
also its almost impossible to find 0.13a or 0.3a @38mm bare fans (ie just the fan only, with bare wire/no 4pin connector direct from san ace or Nidec ). i just cant find them to buy as a bare fan. so at this point it looks like the best move for me (or others) is to just buy FAN- 0125L4 or FAN-0104L4 and swap the fan over to my 2u/3u holder. (they are expensive though! and i need about 15x). will update w final results