Other cooler options were the ultra kaze or the s-flex to take advantage of the high static pressure, but I figured since Scythe doesn't mount the ultra kaze or the s-flex on it's newer cpu coolers and chooses the high cfm and more expensive slip stream pwm adjustable, they must do so for a reason ...

Ok , I've done it! My rig & environment: AMD Phenom 555 BE unlocked @ quad core, stock frequency (3,2GHz) , Zalman Performa, 2x Scythe Slip Stream PWM Adjustable in push-pull config set @ 1120rpm, Arctic cooling MX-4 thermal compound, Antec P193 case w/ 1x200mmm Tricool intake @ 600rpm, 1x120mm Zalm...

Is it a dumb idea or is there something here? Between the Cooler Master Hyper 212 Plus and the Noctua NH-D14 is there a solution that is priced in-between, but a better performer then both of them and managing to stay reasonably silent (below 25 dbA, no annoying frequencies)? I have chosen the Perfo...

Definitely avoid H70, it has the same pump as the H50. Thanks for the resistor link.

I can confirm everything that's been said about the noisy H50 pump. It is indeed very iritating. They accepted the RMA but I don't think things will get any better with a new one. Does anyone know how to lower the voltage on the pump without a fan speed controller (can't do it from the MB either). T...