Should my AIO pump run at 100% 24/7?

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Muezick

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Bought this system pre assembled from Digital Storm 5 years ago. The AIO pump then was configured to ramp up as needed with CPU load. The pump gets quite loud when it runs at 100% but it keeps the CPU very cool.

I just installed a new z97 and at first, the pump ran at 100% all the time, and i've got a buddy who tells me that's how it's supposed to run. I tried looking online to find out why but I couldn't find any definitive answers except that at lower RPMs, pumps tend to rattle.

My pump has never rattled, in fact it performs just as well today as it did the day I first turned it on. It's an Asetek 240mm.

I'd really rather not run it at 100% all the time if I can help it. It's really damn loud, lol. My CPU idle times are in the mid 20s C and it never gets over 55c at full load, even over clocked.

So what's the issue?
 

Muezick

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But why, where is your reasoning? What's the point.

 

hdmark

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I know in fluid flow , when running pumps at non-design loads, you can create turbulence and other conditions that will affect the life of your pump. that's what I remember from my fluid dynamics class at least. not sure if that's the reasoning or not in computers tho

also, generally machinery (pumps in this case) use more energy to ramp up then to just maintain. so if youre constantly turning down and ramping up, you'll use more energy than if you just let it run full. but that could be wrong with a tiny computer water pump
 
The logic behind it has several points, mostly longevity, performance, and consistency.
It is harder on a pump to dynamically change its speed than to keep it steady, resulting in lowered lifespans (still very long). It also helps keep the fluid flowing at a consistent rate, so the fans can adjust according to temperatures.
 
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