Quote Originally Posted by Alexandr0s View Post
What surprises me is that the shroud had no effect on the 120mm Yate Loon like it seemed to have on the Delta and the GT. I think that even with the Koolance adapter, the GT would outperform most 140mm fans.
I don't think any of them had a shroud benefit. If you look at the dbA separation between the GT15@11V vs YateSM@12V on the MCR120 it's about 8-9dbA.

On the 140mm round, that difference is about 10dbA

I think the yate in 120mm is a very good fan, where the 140mm straight blade model is not quite as good. Either way, the GT is much stronger with noise level per CFM.

My guess is shrouds really don't change noise level/CFM much, if anything maybe sound quality, but I doubt it does much of anything for noise level.

Quote Originally Posted by the finisher View Post
Guess I'm buying GT's. On the undervolting whine, you just have to get the right speed fan for your application.

The tight grouping of all competitors, and then the GT's is amazing.

Scythe better be getting more in the supply chain. I'd also like to see a higher speed model offered than the 15, as Nidec already makes it.


On the Delta 140's, not worth it, way to powerful.

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I'd still like to send this San Ace 140L, It should be good for 5 to 24 volts.
Could only test to 12v, it should still do well. I'd just want to see the graph to 2600 rpm. Specs @ 160cfm, free air.
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Obviously these are no solution, unless you have some.


I'm buying GT's
I could give it a shot...I'm not in any hurry closing this testing down. While I'm not taking requests to buy new, I'll work in another test. As long as the wife is willing to put up with my test bench in the walk in..

When she kicks me out of there, I'll say testing is done!