H100i pro rgb 5 yr old aio acting wierd 2rd pic is normal

[Lou0717]

only happens when gaming

[muvo]

As long as the temperatures are within a normal range, everything is normal. You have chosen an extremely small range of around 70 revolutions, where any fluctuation in the cooling is extremely noticeable.

Try switching the cooling to a different mode and see if it keeps the rotation going.

[Lou0717]

i have tried extreme and quiet all do the same thing

[c-attack]

Yes, it’s normal for that model. The pump rpm displayed is a predicted value for 60 sec based on a 2 sec sample. That specific model rounds it revolution value to the nearest whole number before multiplying by 30. As a result, changes in pump speed always move in 30 rpm chunks — 2100-2100-2130-2100, etc.  It only takes little differences like 70.4-70.4-70.5-70.4 revolutions per 2 seconds to create that.  This is not the same as a pump with 100-300 rpm shifts per interval.

 

As mentioned above, CUE graphing auto zooms in and makes that inconsequential change look mountainous. 

[Lou0717]

it start to happen when at high framerates when thing get warmer