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H100i AIO Fan Speeds different from one another?


platysaur
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Is it common for fans to have different RPMs, like 20 RPM apart or so? The fans on my H100i AIO usually stay around 15 RPM apart or so but can teeter a bit lower. I think the difference of 30 RPM is about as high as it goes, but for some reason I have this notion that they're supposed to be the same. Here's what it looks like. Is everything normal, and am I just stressing over nothing like usual? I also ask because simply I don't know what is within the norm.

 

image.png.21481b24d491b66c0f7600c52844646c.png

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They will always be different. iCUE or any other program is polling every 1-2 seconds. It takes some kind of fractional rotation value and multiplies it out by 30 or 60. It's making an estimation for the next 1-2 seconds, not giving you a true speed assessment over time. This is even more obvious on the pump with the value rounded prior to multiplication. You can see it move in very clear +-30 rpm chunks. There is no difference in fan performance at these levels. Edited by c-attack
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They will always be different. iCUE or any other program is polling every 1-2 seconds. It takes some kind of fractional rotation value and multiplies it out by 30 or 60. It'a making an estimation for the next 1-2 seconds, not giving you a true speed assessment over time. This is even more obvious on the pump with the value rounded prior to multiplication. You can see it move in very clear +-30 rpm chunks. There is no difference in fan performance at these levels.

 

Thank you for the clarification! I really appreciate it.

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