generaly Alpha Cool are very silent pump Sadly the fitting is dangerous due to material not made for strong arm... lol Exept that and the german doc everything is nice and cool. So be very carrefull when you fit it into your system 🙂

Maybe I'm missing something, but isn't 350lph a little.... low for a D5? I mean the VPP655 is 1,500lph at 4,800rpm, and I don't think the 300rpm difference would drop the flow by almost 80%. I feel like a 1 is missing (so 1,350lph), but every listing I've seen is missing the same.

The flow rate is actually slightly better than the D5s. They oddly measured flow rate somehow. 2 reviews of it out already. Its significantly quieter than D5s.