140mm Fan Testing on a HWlabs SR1 Radiator Round 7

[Church]

GT results made me feel extra down because of investing in big pile of 140mm NB PK3s

[Martinm210]

Delta 38mm AFB1212VHE Rev3 from SWC + BGears 120-140 adapter

I had to see how high speed would do. Even if I can't put up with fans this high in speed, it's still impressive to watch now and then. This fan was sponsored by OldChap..

Seems to follow a similar trend as the 120mm fans. Starts out a bit high in speed, but it really has impressive CFM/noise ratio in the high speed area. Still very loud no doubt, but it's producing almost twice the CFM at similar noise levels as some of the 140s without an adapter.

Again, this is a bit apples to oranges with the adapter and potential shroud benefits, so take that into consideration as well.

VIDEO LINK
Not quite ready, but this should be after YT finishes processing:
http://www.youtube.com/watch?v=G6IiiCv6mJQ

[Martinm210]

Yate Loon D12SL-12 PTS on BGears 120>140mm adapter

Pretty much about the same as the 140mm fans in noise level per CFM. While the 140's do have a general CFM per RPM advantage, they also produce more noise per RPM. Really not much if any difference other than a slightly different tone. Actually I much prefer the 120mm yate myself, it's smooth at all volts, where the 140mm is nice down at lower RPMs, but has issues up high with the blade resonance thing.

If the shroud effect is zero, it seems on a radiator there is little to no difference in noise level per CFM between 140mm and 120mm fans. This is probably why there is some hesitation for fan makers to go to 140 sizing...also probably why we see fewer high speed 140s. Anyhow, this 120 does great on the 140mm radiator, particularly with noise quality where it's smooth all around.

VIDEO LINK
http://www.youtube.com/watch?v=9lVREDxAiME