💧 Alphacool VPP655 - Universal PWM Pump for Fans, Coolers, and Radiators (4-Pin, Black, Metallic, Ceramic, Plastic, 37 W) Review

I bought this pump for my mostly custom Alphacool cycle both my GPU and CPU. The only things that weren't from Alphacool were the CPU block, which was an EK Supremacy Evo for Intel X99 sockets, and my tank/pump, both of which were from Aquacomputer. My Aquacomputer Aqualis tank has a fountain effect that requires the pump to be connected directly to the top of the pump and the tank. I wasn't sure if it would fit because it was a different brand but of course it was perfect for it. Very happy…

Perfect fit and PWM pump speed control is fantastic. As it is PWM you can also see how fast the pump is running so you can check pump operation quickly and easily.

Most of the time I can't even hear it due to the almost silent PWM operation. The fans are generally louder than the pump in my case, except on the quietest settings.

Motor on with expected 50% speed with no PWM control during closed loop test. With the PWM pin connected, the revolutions in the while range could be run through without any problems. Has worked perfectly.

Sucks. I'm pretty sure I have a floor unit, I'm pretty new to water cooling but I've had all sorts of over temperature issues. I figured it might be because my loop wasn't fully deflated, so I spent several hours tilting and rotating my computer to bleed every last drop of air. It helped my pace a bit, they were safe but a bit high. Not wanting to completely disassemble my loop, I left it and decided to see how things went. A few months later I had time to deflate and disassemble my loop and…

It was amazing for the first few weeks, almost completely silent even at full speed. I've had to deflate and refill my loop and now it makes this horrible piercing squeak with an unbearable scratching noise that accompanies it. I'm sure that probably won't happen to everyone, but it still sucks.

Got this as a Christmas present for a build I'm working on. Finally I opened the box and decided to give it a try by installing a mini water circuit and it was DOA. Unfortunately, since it hasn't been returned by a long way, I have no choice but to order a new pump. Too bad I didn't get the parts back when I received them so I could test them then.

I bought this pump for my Alphacool main circuit for both my GPU and CPU. The only things that weren't from Alphacool were the CPU block, which was an EK Supremacy Evo for Intel X99 sockets, and my tank/pump, both of which were from Aquacomputer. My Aquacomputer Aqualis tank has a fountain effect that requires the pump to be connected directly to the top of the pump and the tank. I wasn't sure if it would fit because it was a different brand but of course it was perfect for it. Very happy with…

D5 PWM pump with readable PWM control board. Does not work properly with the Aquaero controller. At less than 50% of max speed, the controller saw 2000 RPM as max speed. This made it difficult to fill the circuit with liquid. The Swiftech and EK PWM pumps worked great on the same controller. Works great on the motherboard header, but it doesn't help if you try to fill the loop and blow air. Two of these are used in series in a circuit. The intention was to drive them separately to even out the…

the first few weeks were great, almost complete silence even at full speed. I've had to deflate and refill my loop and now it makes this horrible piercing squeak with an unbearable scratching noise that accompanies it. I'm sure that probably won't happen to everyone, but it still sucks.