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ECS G31 T-M Speedfan CPU DeltaT

I

Itchrelief

Golden Member
I'm playing around with the fan settings in the bios, but I have no idea what this setting changes. I think the default setting was +3, and it can be set from +0 to +15 or something like that.

Changing any of the other settings changes the value that the bios gives as the temperature at which maximum fan speed is attained, so I assume all of these other settings affect fan speed throttling, but CPU DeltaT doesn't seem to change this max temp no matter how much I change it.

Since it doesn't seem to do anything that I care about (namely getting the fan to spin a little slower), I left it at default.

Anyone know what the heck this setting affects?

Thanks
 
Originally posted by: jrichrds
It is how many PWM steps that are taken per degree temperature change.
Click to expand...

I think that's the slope.

I think DeltaT is how many degrees of "lenience" it has before changing behavior. For instance, if the fan goes faster at 50ºC, which cools to below that temperature so the fan slows down, which causes CPU to heat up, which causes fan to speed up... This will cause the fan to spin up and down constantly. I know I've seen digital room thermostats which had such settings.

Anyways, I could be wrong.
 
Originally posted by: Zap
Originally posted by: jrichrds
It is how many PWM steps that are taken per degree temperature change.
Click to expand...

I think that's the slope.

I think DeltaT is how many degrees of "lenience" it has before changing behavior. For instance, if the fan goes faster at 50ºC, which cools to below that temperature so the fan slows down, which causes CPU to heat up, which causes fan to speed up... This will cause the fan to spin up and down constantly. I know I've seen digital room thermostats which had such settings.

Anyways, I could be wrong.
Click to expand...
You're right...I got the two settings mixed up.
 
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