I bought the Heatkiller 250 pumpres combo a year ago, but never installed it. But since my holidays abroad are canceled due to the Corona virus, I finally stripped my PC and changed the reservoirs.
The Heatkiller res looks very good and is quality, but once installed, my pump is so much more quite with this res. I was using the EK pump/res combo and my case and desk started to resonate when the pump speed was above 4300rpm.
I'm using the optional fan mount brackets to mount it and the enclosed dampers do a really good job. Now I can barely hear the pump at full speed if my fans are running and there is not a single vibration in the case. I'm really happy with the upgrade!
Corsair Vengeance LPX 3000C15
Samsung 970 EVO
Samsung 850 EVO
Dual Hardware Labs Nemesis 360GTS with FD Venturi HP-12 PWM fans
EK 1080 Strix waterblock + backplate
Fractal Design Define R6
Windows Pro 10
Acer XB271HU 1440p 165hz IPS
Steel Series QCK Heavy
Sennheiser HD598 + ModMic 4.0
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