Originally Posted by Paps.pt
Thanks a lot for your thoughts.
My gentle typhoon is the ap-15, a 1850rpm model. It's mounted on the 740gf, the GPU only kit. I ve put my ears real close to each component and got to the conclusion that that fan is indeed the quieter one, but even so I believe I will use the low voltage adapter. The only thing is that adapter is a 4 pin and the Gentle Typhoon is 3 pin, I think it won't work, but I understand what you mean. Meanwhile I disconnected 2 standard fans that came with my CM storm scout case and noise is a bit quieter. Regarding pump noise I didn't know that it was so resembled with typical fan noise, so I believe you are correct. Also tried controlling the Noctua's fans with Asus probe or speed fan but it doesn't do anything. Maybe I will end up removing one of the Noctua's. Connected the 3 pin power connection of the Asetek 760GC to the P8Z68 Pro motherboards 3pin pwr_1 fan header (not voltage controlled) and the sensor reports it ar 1450 rpm fixed, would it help if I connect it to the Chassis_1 fan header (voltage controled by bios) ?
I will keep trying to improve the setup. Now I am waiting for the other gtx 670 and my 27 inch 1400p monitor, if you have other ideas I would be thankful ;-)
Yo My setup runs like this.
Gtx670 - Corsair H50
I had lots of pump noise when I connected straight to my PSU and the same when I connected to my motherboard.
I also have a Zalman Fan controller. and when I connected to the controller my pump noise disappeared.
My H110 other the other hand makes no noise directly connected to my motherboard.
There is a thread here that shows how to add a resistor to get rid of pump noise.