120 mm for Fractal Define R4

[koxy]

Hi,
Due to PSU upgrade which is bit longer that old one i had to remove Antec TrueQuiet 140mm fan... and now i'm looking for replacement. Which 120mm fan is quiet as Antec Truequiet 140mm ? I use Lamptron Fan Controller and run all my incase fans at 500-540 RPM.

[CA_Steve]

You could check your component temps and see if you need to bother with a bottom fan rather than replace it..

[koxy]

You could check your component temps and see if you need to bother with a bottom fan rather than replace it..

Thx Steve for answer, no temps dont bother me at all, before was 1-2 degree difference with bottom fan so i can live with that i guess.

[quest_for_silence]

Which 120mm fan is quiet as Antec Truequiet 140mm ? I use Lamptron Fan Controller and run all my incase fans at 500-540 RPM.

The Scythe Gentle Typhoon are discontinued, so you might use a Noiseblocker BlackSilent Pro PL-2, if locally available at decent pricing (here it is): the Silverstone AP123 may be also considered, whether noise signature is paramount.
A much pricier option could be a Noctua IPPC, either 2k or 3k, as well as an eLoop (any brand) B12-2/B12-3.
You might also use lower speed variants of the various Noiseblocker (BS Pro/eLoop), though I think they're a bit less flexible.

[quest_for_silence]

A much pricier option could be a Noctua IPPC, either 2k or 3k

Correction: I was thinking to a PWM drive for the IPPC, while you're using a Lamptron controller, so they're not suitable for your need (the IPPC fans when voltage driven shouldn't be dialed down enough low).

[Bearmann]

Which 120mm fan is quiet as Antec Truequiet 140mm ? I use Lamptron Fan Controller and run all my incase fans at 500-540 RPM.

The Scythe Gentle Typhoon are discontinued, so you might use a Noiseblocker BlackSilent Pro PL-2, if locally available at decent pricing (here it is): the Silverstone AP123 may be also considered, whether noise signature is paramount.
A much pricier option could be a Noctua IPPC, either 2k or 3k, as well as an eLoop (any brand) B12-2/B12-3.
You might also use lower speed variants of the various Noiseblocker (BS Pro/eLoop), though I think they're a bit less flexible.

Is this it?

http://www.coolerguys.com/sgt120.html

[quest_for_silence]

Is this it?

http://www.coolerguys.com/sgt120.html

Yes, those should be the GTs, but take also note that apparently the lower speed, better sounding variants (AP12, AP13) are not available from that vendor.

[lodestar]

It might be worth mentioning that Scythe now make a double ball-bearing version of the Slip Stream 120mm. According to Scythe this increases the MTBF from 30,000 hours for the previous sleeve bearing version to 350,000 hours for the ball-bearing units. They are available from sources such as Newegg, the available 3-pin fan speeds being 500 rpm, 800 rpm, 1200 rpm, 1600 rpm and 1900 rpm. From Newegg prices vary from $14.50 to $15.00.

For the sake of completeness it can be added that there is also a PWM 120DB Slip Stream with a speed range of 200 (+-300) ~ 1300 rpm that is $16.50 from Newegg.