Thanks again guys, I'll start using changing the two 120 mm fans and see how they work, I was looking for a 4 pin PWM fan solution and the only one that I found was the Freezer Pro 7, now there's an Asus one but I nerver heard about a 120mm 4 pin PWM, do you know why?.
Brians256 you mean that using water cooling is more noisy than what I'm currently having all this due to the pump?
I think I will have to wait for GPU fans until appear 8600/ 8500 because the ones used in 8800 can't be used on 7XXX and 6XXX due to the GPU size
at least that's what thermalright says