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  #11  
Old 03-01-19, 10:07 AM
Warchild Warchild is offline
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Its not doing some anti dust reverse spinning on start up is it?

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  #12  
Old 03-01-19, 10:18 AM
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TheF34RChannel TheF34RChannel is offline
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Originally Posted by Warchild View Post
Its not doing some anti dust reverse spinning on start up is it?
Fans always spin up briefly upon power on, like all cards I've had, nothing out of the ordinary.

PS: card is clean; I always take good care of my baby.
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  #13  
Old 04-01-19, 11:33 AM
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Dawelio Dawelio is offline
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Originally Posted by TheF34RChannel View Post
PS: card is clean; I always take good care of my baby.
Probably why it’s acting up then, you fecked it up ...
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  #14  
Old 05-01-19, 08:13 PM
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TheF34RChannel TheF34RChannel is offline
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Originally Posted by Dawelio View Post
Probably why it’s acting up then, you fecked it up ...
Worst parent ever!

Update: decided to run MSI Kombuster (OpenGL) and the fans are fine. It truly only is in Odyssey - but how??
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  #15  
Old 06-01-19, 11:58 AM
tgrech tgrech is offline
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Have you tried just pegging the fan at like 80% with no auto and checking that fixes it to ensure it's definitely the GPU fan?

Odyssey could be putting more load on than Kombuster, but if it's revving you're hearing it's more likely that the load is varying significantly over short spaces of time(Maybe switching from gameplay to menu/pause/inventory), you can see GPU load/Activity from OCing tools like Wattman or from Task Manager (On modern updates on Windows 10), you'll want it in graph format so you can see dips over time. AMD's drivers plots these alongside fan speeds, temps, ect on same graph which is pretty useful here so presumably equivalent Asus software or something does a similar job.


If that's the issue, just make sure your fan curve is straighter (No steep changes or 2nd-order gradients, IE try and keep the rate of change constant). The thing someone else mentioned, of a speed being too low, is also a prominent issue with voltage controlled fans(2 or 3-pin) below around 40% or PWM-controlled fans(4-pin) once the %age off of the duty cycle becomes equivalent to the power cycle of the fan(1 revolution, so at say 600RPM the fan does 10 cycles a second for a 0.1 send cycle, and if that speeds reached at say a 20% of a duty cycle(IE power is only turned on for 20% of the time the fans running and completely off the rest in a rapid fashion) and the PWM cycle frequency is too low and the fan has a low moment of inertia (essentially weight here) then it could lead to inconsistent speeds as well.

It could also be that the fans settling at a speed that causes first or second order harmonic motion or resonates with other components (IE the frequency of the fans matches the natural frequency of whatever it's attached too) but that's a rare one especially to repeat consistently.
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  #16  
Old 07-01-19, 08:41 PM
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TheF34RChannel TheF34RChannel is offline
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Quote:
Originally Posted by tgrech View Post
Have you tried just pegging the fan at like 80% with no auto and checking that fixes it to ensure it's definitely the GPU fan?

Odyssey could be putting more load on than Kombuster, but if it's revving you're hearing it's more likely that the load is varying significantly over short spaces of time(Maybe switching from gameplay to menu/pause/inventory), you can see GPU load/Activity from OCing tools like Wattman or from Task Manager (On modern updates on Windows 10), you'll want it in graph format so you can see dips over time. AMD's drivers plots these alongside fan speeds, temps, ect on same graph which is pretty useful here so presumably equivalent Asus software or something does a similar job.


If that's the issue, just make sure your fan curve is straighter (No steep changes or 2nd-order gradients, IE try and keep the rate of change constant). The thing someone else mentioned, of a speed being too low, is also a prominent issue with voltage controlled fans(2 or 3-pin) below around 40% or PWM-controlled fans(4-pin) once the %age off of the duty cycle becomes equivalent to the power cycle of the fan(1 revolution, so at say 600RPM the fan does 10 cycles a second for a 0.1 send cycle, and if that speeds reached at say a 20% of a duty cycle(IE power is only turned on for 20% of the time the fans running and completely off the rest in a rapid fashion) and the PWM cycle frequency is too low and the fan has a low moment of inertia (essentially weight here) then it could lead to inconsistent speeds as well.

It could also be that the fans settling at a speed that causes first or second order harmonic motion or resonates with other components (IE the frequency of the fans matches the natural frequency of whatever it's attached too) but that's a rare one especially to repeat consistently.
Wee update as I was low on time; setting the fans to a fixed 70% (higher than they'd reach on auto), the issue showed itself way less. So you're into something here, thanks.
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