Does it ever end? Just bought an aquacomputer flow meter. Will probably end up buying an ek dual d5 top and 2 aquacomputer D5 pumps in the new year so I can get a decent flow rate with minimum noise.
I push 1gpm at 90% power on my ek d5, based on PSI loss calculations.
It's certainly not ended for me yet although I hope to slow it down a bit as it's damn expensive.
I got one of the EK dual D5 tops a couple of months back for the redundancy and it's great. I have both pumps set on 3 so it's very quiet and am getting 280 lpm according to my flow meter. For comparison my loop is CPU, GPU, 360 rad, 280 rad & a 240 rad.
