Re: 2080ti FTW3 Hybrid Fan custom curve problem
2020/02/13 13:15:51
(permalink)
Just to test, i swaped the EVGA Fan with a Corsair RGB Fan, also PWM, and have the EXACT same problem, meaning it's either the software X1 which is buggy, or the actual PWM controller on the card itself which is badly designed.
Put a 5000ms "fan speed update period".
Set a fixed 75% speed beginning at 20° so that it's supposed to ALWAYS keeps it at 75%
Expected result:
The fan keep a constant speed during 5second, then get adjusted depending on the actual temp. Then keep this new constant speed for 5seconds. Then adjust.... etc.
With a set 75% speed, the fan should always keep the same speed.
Actual result:
The fan try to reach 75% a fractional second (10ms or so), then the minimum (which seems to be the 40% speed) during 5seconds, then speed up during 10ms, then the minimum during 5sec.... etc
The fan actually never even reach 75% speed, and only goes from 450->800 a fractionnal second before going back to 450 during next 5s.
Ridiculous.
Warning: i'm talking about the fan attached to the rad, not the fan of the card itself which behave correctly.