Is it normal for gpu fans to be 100 rpm off then the rest

[501st the greatest]

I have a evga rtx 2080 ftw3 and and I have the same fan curve set for all three fans, im wondering is 100rpm difference a bad sign, for example

Fan 1: always reaches 1200rpm at 40%

Fan 2: always reaches 1320rpm at 40%

Fan 3: always reaches 1320rpm at 40%

Is that something that I should worry about? Any information would help I'm just curious if I should worry or not 

 

[Rxkvn07]

fan spin independently depending on the heat of the zone 

[501st the greatest]

So that 100rpm difference isnt a bad thing?

[Neggy-Z]

Fan one is most likely the middle fan, it seems smaller then the other 2 if i'm looking at the right card so rpm would be different.

Regardless of that, 120rpm is within 10% which is usually margin of error when it comes to most fans.

[JoostinOnline]

It's normal for higher end cards. My 980 Ti doesn't even turn on one of the fans unless it reaches a certain temperature. It's to prevent unnecessary noise.

[501st the greatest]

I apologize for asking but what do you mean by 10% margin of error in fans?

 

[Pickles von Brine]

2 minutes ago, 501st the greatest said:

I apologize for asking but what do you mean by 10% margin of error in fans?

 

Fans are made to a tolerance of error of 10%. They are allowed to skew from their max rated fan speed by 10%. 

So if you get a fan rated at 1000RPM. Allowed tolerance is the fan running at between 900 and 1100 RPMs and still considered working fine. Making a precise fan is expensive manufacturing wise and almost nigh impossible, so manufactures have these tolerances built into their specs. 

[JoostinOnline]

Just now, 501st the greatest said:

I apologize for asking but what do you mean by 10% margin of error in fans?

 

Make sure you tag or quote people if you want them to be notified. Example:

@Neggy-Z

 

Also, never feel like you need to apologize for asking a tech question.

[Pickles von Brine]

5 minutes ago, JoostinOnline said:

Make sure you tag or quote people if you want them to be notified. Example:

@Neggy-Z

 

Also, never feel like you need to apologize for asking a tech question.

Exactly. It is why we are here. Hell, I get a kick out of helping people around here. It is fun and occasionally learn a thing or two. Besides, it isn't like I got my knowledge suddenly either. It has been accumulated for over a decade. And where did we all start? Places like this. Asking questions, gaining knowledge, experimenting and getting experience. Success can be a great teacher, but failure is a better one. But figuring out what you did wrong is hard. So, go to the hive mind, learn a thing or two and get back to running. 

There is a reason for my quote in my sig. It is a reminder to my humble beginnings as a doe eyed 17 year old building his first machine from a magazine. Yes I am old. HA!

[Godlygamer23]

5 hours ago, 501st the greatest said:

I apologize for asking but what do you mean by 10% margin of error in fans?

 

It's a tolerance. 

If a manufacturer specifies a certain value, they'll have a tolerance associated with it. Something like x +/- 5.