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Originally Posted by Cathar
Don't mobo fan headers typically use PWM for speed control?
What impact would this have on hall-effect sensor pumps and their life-span?
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And that is what I was asking for in the #1 question several posts ago that said something to the effect of
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Originally Posted by ricecrispi
It should theoretically increase pump service life.
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I also find it hard to believe voltage cycling is good for a pump.
I still don't like the idea of my pump being hooked into the motherboard (RPM sensor OK though, just not the power). With all the short cuts they take.....
I have a Crystal Fontz CF633 that is powered by a molex which I think might work fine with the pump Dave mentions. I could even show the pumps RPM on the LCD if I choose and I could have it shut the pump off if the RPM gets to low... And yes I could change the speed with temp with one of the thermal probes on the unit.