Barrow D5 PWM Pump

This is work great for my need. I have 2 of them running in my system. Currently have no issue with the water flow in my system.My system is consist of 2 x 480 radiator, 1 x 560 radiator, 3 x reservoirs (270) including HD waterblock, monoblock, and 2 gpu blocks. I have the setting running at low @ 10% under 40' C and going 100% @ 75' C. I am controlling the PWM with the Asus Fan Xpert4.

seems these Laing style pumps are engineered poorly. on my third in just over a year. filtered RO/DI with three hour contaminant flush. water remains crystal clear. pump balance shaft inset material is not durable and after some time, degrades and disintegrates inside a week. last one went from purring quietly to roaring rumble and lock up in about 26 hours.

Even though the name says D5, this is not a real D5 pump made by Laing. It is compatible with D5 pump tops but it's not actually a D5. The real D5 I believe uses 23 watts while this pump uses only 18 watts so it's probably not as powerful as a real D5. That being said, this pump has plenty of power for my needs. I'm running a XSPC raystorm pro with 280mm radiator and 2x240mm radiators and this pump provides plenty of water flow. This pump is dead silent even at max speed. As a matter of fact, I wonder why you should bother setting the speed at all since it's silent at the max rpm setting. Overall, I highly recommend this pump as an alternative to the pricier D5 pump.I knock it down 1 stars because for some reason, Barrow did not provide an O-ring for the pump so I had to buy one separately which adds to the cost and frustration.

Excellent value. Have been using this pump to cool my CPU/GPU loop for over 6 months without any issues. I'm very happy with this purchase.

This was not a D5 pump. It was a hardline fitting

It is a very powerful pump. That being sad, it should be considered that the pump alone does give off some heat. It won't make the coolent burning hot but it will warm it up. The water I tested the pump in was about 59-60F and the temperature went as high as 90F. But if you have a fan controller, you might just be able to lower the rpm of the pump enough to where the heat shouldn't be too high.

It did not work. Had molex hooked up and the fan plugged into CPU head, no response, not even a hum.