Quote:
Originally posted by rocketmanx
I agre with Turbokeu.
And so I leave my box running 24/7 only shutting down to swap hardware etc... I think the heat cycle on the pump is the big killer, I see it the same as race engines, it's not so much the big power high R's that kill em it's the heat cycles when they are up to temp then shut down, parts are made to run at a certain temp and things tend to swell when hot.
The relay I agree also, the relay should long outlive the pump and probably everything else in your box.
I agree with bladerunner on the relay. I like a relay only because my memory sucks  If you happen to get in a big rippin' hurry, all excited about that new pump, block, etc... you just installed, then forget to plug in the pump 
Just a good failsafe having a relay. They are so easy to install I see not installing one as a bit lazy, spend all that money on the best water cooling stuff only to skimp on something as simple as a relay. Doesn't make sense to me, IMHO.
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You agree with me?
I'm stating the opposite of what you tell in your reply...
BTW, I do not agree about the heat cycles when switching the pump, my water temp is maximum 30°C when running Prime95 @ about 20-22°C ambient. So temp gradient is about 10°C.
Car motors run @ about 90°C or more water temperature even when ambient is -40°C...
The advantage of a relay is that you know your pump is powered on when you switch on your PC, and powered off when you switch it off. (I know, it's not sure for 100%, but then I have a digital flowmeter that indicates if the pump is running...)
Anyway, I'm from the "old" generation, if you don't need it, don't power it...
CD
