I installed a hybrid kit on my 980 Ti SC a few days ago and was disappointed to hear a buzzing noise coming from the pump as soon as I turned my PC on.
 
I have a Fractal Design Define R4 case which has a pretty good amount of sound dampening but I can still hear a constant buzz coming from the pump. I have the radiator mounted higher than the card, with the hoses on the side of the radiator that's closest to the ground.
 
I hooked the hybrid's radiator fan up to my case's fan controller and when I run my two (140mm) case fans and the hybrid kit's radiator fan at 7v the fans are all basically silent but the pump's constant buzz is very noticeable. When I run all the fans at the full 12v then it is harder to hear the buzz of the pump but the overall loudness of my system greatly increases.
 
I've tried a few things like laying my case down horizontally or tapping the hoses but nothing seems to have had any effect on reducing the noise from the pump.
 
Can anyone else with a hybrid card/kit let me know if their pump makes a constant buzzing sound? I'm trying to figure out if this is just common to the design of the hybrid cooler or if I might have gotten a faulty pump in my kit.

My pump does not make any buzzing sound, all I hear is the woosh of the radiator fan. I have my radiator mounted at the top of my case horizontally. 

jlp209
My pump does not make any buzzing sound, all I hear is the woosh of the radiator fan. I have my radiator mounted at the top of my case horizontally. 

Interesting, thanks.. the sound coming from mine is pretty obvious which makes me think that maybe I got a bad unit.
 
I was reading up on water cooling pump noise and saw some people mention that they had pumps with buzzing noise that went away after something like 50-60 hours of use, so I'm planning on keeping my system turned on throughout the long holiday weekend to see if it goes away on its own in time.

parkerlewis
Interesting, thanks.. the sound coming from mine is pretty obvious which makes me think that maybe I got a bad unit.
 
I was reading up on water cooling pump noise and saw some people mention that they had pumps with buzzing noise that went away after something like 50-60 hours of use, so I'm planning on keeping my system turned on throughout the long holiday weekend to see if it goes away on its own in time.

Yeah it's weird. I've read posts on here of people experiencing loud buzzing and also loud fan noise from radiator so you're not alone. Sounds like a good idea leave it running for the weekend and if no change request an RMA.

Mine is doing this too. It's immensely annoying.
 
Let me know if it goes away or if you find a fix.

You may want to take a look at this http://forums.evga.com/m/...5573&fp=1&p=15

Congrats. Mine won't get here till Monday.  oh well...but just a tip I read this on another forum when I was wondering how to mount the radiator since the instruction on EVGA's website has no mention of how it should be mounted in the case. Regarding the H80 CPU coolers, but if you mount it vertically you should mount it so that the tubes are towards the bottom or you might get noise. From this post on another website: http://www.neowin.net/for...-corsair-water-cooler/

xXxDieselxXx
You may want to take a look at this

Congrats. Mine won't get here till Monday.  oh well...but just a tip I read this on another forum when I was wondering how to mount the radiator since the instruction on EVGA's website has no mention of how it should be mounted in the case. Regarding the H80 CPU coolers, but if you mount it vertically you should mount it so that the tubes are towards the bottom or you might get noise. From this post on another website:

I had read that as well, but it can't always be done. Take that first picture, for instance -- if the card were an EVGA Hybrid, the tubes would terminate at the bottom of the radiator all of 1" away. I don't think they can bend that extremely, and even if they could they would protrude so far as to stop you from closing your case.
 
There's a bit more freedom with water cooling a CPU, since it's farther away and you can choose how to mount the waterblock and thus which direction the tubes come out.
 
 
 

I had the hybrid and the pump buzz noise too. From what I saw, this sound is just typical for every AIO. Just see at youtube others AIO solutions ("corsair pump noise") and you will notice that all AIO made exactly the same buzz noise.
 
With the radiator-fan at 7v you will notice the pump noise. It made me crazy :O.
 
Now I have a SC+ ACX2.0+ and I'm very, very happy with: very quite and cool at full load.
 
Either you go for a custom loop or for air-fan, if you need SILENCE at idle like me.
 
My opinion.
 

stgrosso
I had the hybrid and the pump buzz noise too. From what I saw, this sound is just typical for every AIO. Just see at youtube others AIO solutions ("corsair pump noise") and you will notice that all AIO made exactly the same buzz noise.
 
With the radiator-fan at 7v you will notice the pump noise. It made me crazy :O.
 
Now I have a SC+ ACX2.0+ and I'm very, very happy with: very quite and cool at full load.
 
Either you go for a custom loop or for air-fan, if you need SILENCE at idle like me.
 
My opinion.
 

That's disheartening. I've seen some people have success downvolting the pump itself, in the case of this cooler and with Corsair coolers, but to do so I'd need an adapter that only one site appears to have, and it ships from China.
 
For some reason I can't include links in my posts, but if anyone is curious just search Google for "4pin mini gpu to 4pin pwm" and it's the first result.

Pierit

stgrosso
I had the hybrid and the pump buzz noise too. From what I saw, this sound is just typical for every AIO. Just see at youtube others AIO solutions ("corsair pump noise") and you will notice that all AIO made exactly the same buzz noise.
 
With the radiator-fan at 7v you will notice the pump noise. It made me crazy :O.
 
Now I have a SC+ ACX2.0+ and I'm very, very happy with: very quite and cool at full load.
 
Either you go for a custom loop or for air-fan, if you need SILENCE at idle like me.
 
My opinion.
 

That's disheartening. I've seen some people have success downvolting the pump itself, in the case of this cooler and with Corsair coolers, but to do so I'd need an adapter that only one site appears to have, and it ships from China.
 
For some reason I can't include links in my posts, but if anyone is curious just search Google for "4pin mini gpu to 4pin pwm" and it's the first result.

I don't want to pay 850€ for a product that I have to modify to make it work like I wish and with the fear that it could be damaged and that this could be my fault.
 
I bought the SC+ ACX2.0+ and I'm very happy with!