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bobkoure · 10-05-2004, 09:13 AM

The quietest pump I've ever used is the Eheim/Innovatek HPPS, which is quieter than the 1046 (so under 18dB)
It's impeller and housing are pretty much the same as the 1046, so you'd expect it to be very underpowered, but judging from the temps I've been seeing its performance is better than the 1048.
Makes a good low-noise combo with the Swiftech 5000 or 6000 series and the thin BI rads. According to the graphs, the whitewater actually does fine with this kind of flow as well (haven't used one with a HPPS, can't speak from experience.
I've got a Storm on its way to me and plan to put it in a box with a HPPS - will report (although I don't plan to do an actual test which would involve a number of re-mounts). The pump is a "drop in" replacement for the 1046 and 1048 so I could change pumps and see if there was a change without introducing other variables - not as easy with a waterblock.
All that said, Iwaki pumps are supposed to be both powerful and quiet. I'll probably pop for one of them for the next system I build that's for me

There's the beginnings of a group buy for a 12V Iwaki (that would have to be special ordered). Look here for the thread.
I guess it's one of those "high-performance, quiet, not-breathtakingly-expensive; choose two"

10-05-2004, 09:13 AM	#7
bobkoure Cooling Savant Join Date: Feb 2003 Location: USA - Boston area Posts: 798	The quietest pump I've ever used is the Eheim/Innovatek HPPS, which is quieter than the 1046 (so under 18dB) It's impeller and housing are pretty much the same as the 1046, so you'd expect it to be very underpowered, but judging from the temps I've been seeing its performance is better than the 1048. Makes a good low-noise combo with the Swiftech 5000 or 6000 series and the thin BI rads. According to the graphs, the whitewater actually does fine with this kind of flow as well (haven't used one with a HPPS, can't speak from experience. I've got a Storm on its way to me and plan to put it in a box with a HPPS - will report (although I don't plan to do an actual test which would involve a number of re-mounts). The pump is a "drop in" replacement for the 1046 and 1048 so I could change pumps and see if there was a change without introducing other variables - not as easy with a waterblock. All that said, Iwaki pumps are supposed to be both powerful and quiet. I'll probably pop for one of them for the next system I build that's for me There's the beginnings of a group buy for a 12V Iwaki (that would have to be special ordered). Look here for the thread. I guess it's one of those "high-performance, quiet, not-breathtakingly-expensive; choose two"