Wow those AL140s look very nice. Hope they perform well. I was thinking of combining the P14 fans with the Halos 140mm frame for my custom loop but this would be even more elegant. Hope the release date is somewhat soon.
As far as my research has gone and by comparing the specifications of the new AL fans on their announcement video, to the current SL fans, these new AL fans have slightly higher performance in terms of static pressure and airflow. Although, it's to keep in mind that there's no information on how these results were obtained. And were there any sort of restrictions or so? We don't know if these results would translate directly onto an AIO or similarly. Ie, if the new AL are better than SL on an AIO.
If you ask me, I don't think the difference will be huge - wether it's better or worse. I'll personally go for the AL version, strictly down due to their aestethics.
Oh, that's super interesting, and something all the reviews I looked at failed to mention.
I wanted to go with 2 P14 PWM PST fans for my build, but now I might need an alternative... the NF-P14s PWM maybe (although I'd really prefer a black fan...)?
Here's the video where he both explains and even demostrates the noise. Even though it's minimal in the video, it's still there and can be an issue depending on how sensitive you are to noise - as everyone's hearing is different.
You do also have the Noctua NF-A14 Chromax, which are black.