AIO pump speed and longevity

[SFFguy]

In an AIO, what would be the best setting for the pump to have it last as long as possible? I've heard that having it on a curve is bad, and it should be set to a static speed. What speed should it be set to? 50%, 70% 100%, or does it not matter? and would it be better to turn it off when not in use, or keep the pump on, because I've heard for some motors the most stressful part is going from off to on, as opposed to constantly running.

[jaslion]

ALWAYS keep the pump on it takes seconds for the cpu to overheat when its off.

 

either way I tend to run the pump at a constant 80%. Or whatever is not too loud.

 

Else the usual for long lasting use is make surr the radiator is above the pump.

 

[venomtail]

I've had my X62 on auto pump speed for the last 6 years but if I remember my CAM profile it stays around 60% anyways but now can't remember if I changed it to a constant speed? My AIO ramps up the fan speed on rads over changing the pump speed if CPU gets hot. I'll have to get home and check. I do try to keep my radiator free of dust and repaste the CPU every few years (mainly due to upgrades that force me to remove CPU but still repasting is recommended regardless).

[TPCEA]

3 hours ago, SFFguy said:

In an AIO, what would be the best setting for the pump to have it last as long as possible? I've heard that having it on a curve is bad, and it should be set to a static speed. What speed should it be set to? 50%, 70% 100%, or does it not matter? and would it be better to turn it off when not in use, or keep the pump on, because I've heard for some motors the most stressful part is going from off to on, as opposed to constantly running.

Constant speed is best. As far a cycling it, yes, that is more stressful. Regarding speed, I would suggest you decide based on performance and, if you care, noise. 

[NorKris]

6 hours ago, SFFguy said:

In an AIO, what would be the best setting for the pump to have it last as long as possible? I've heard that having it on a curve is bad, and it should be set to a static speed. What speed should it be set to? 50%, 70% 100%, or does it not matter? 

you can do a Curve,  50% for when pc is idle and 80-100% while gaming/load 

[freeagent]

That is how I usually run my pump. Set to ramp at 50 while my fans are set to ramp at 60-65.

[HoneyBadger84]

14 hours ago, SFFguy said:

In an AIO, what would be the best setting for the pump to have it last as long as possible? I've heard that having it on a curve is bad, and it should be set to a static speed. What speed should it be set to? 50%, 70% 100%, or does it not matter? and would it be better to turn it off when not in use, or keep the pump on, because I've heard for some motors the most stressful part is going from off to on, as opposed to constantly running.

I run my CPU Pump on my AIO at 50% until the CPU hits 50C (which means it's actually doing something) then it goes to 100%.  As soon as it drops back below 50C, it goes back to 50%.  I've found that to be a good setup for any cooling system, to be honest, ran the same way on my old custom liquid cooling loop on the 5950X/RTX 3090 Kingpin setup I had before my current one and it worked very well.

The idea, as far as I'm concerned, behind running 50% below a certain temperature threshold, is so that, if you're browsing the web, watching YouTube, playing a light game that doesn't actually stress out the CPU, the pump can stay nice & easy, and when you are actually stressing the CPU, it's getting full flow.

Absolutely do not turn it off though, your CPU temperature, even if you're idle doing nothing, will go upwards continuously until you turn it back on.

[TPCEA]

I neglected to mention that I run my Thermalright Frozen Notte 360's pump at 100% all the time and never hear it since it's a very quiet pump, and its fans are doing the actual work.