Do you think 100% fan speed harm the fan?

[Emoclaw]

Regardless if you run them at 70% or 100%, they will eventually die.
70% will last longer, however how many have actually had GPU fans die on them? It never happened to me. Aren't fans rated at like 100.000 hours or something?

that is not the point  the point is you are wasting power  once you get into the 90-95%  range  the cooling is not improved and you waste power.

Since the idea of running the gpus is making money  then why waste power by setting them higher then 90%

GPU fans don't consume any significant amount of power. The power draw increase from when a fan isn't spinning to when it goes to 100% does not exceed 4W, and therefore a 10% increase is much less significant. Some fans are event more efficient than that.
Though it is pointless running at 100%.

[philipma1957]

Regardless if you run them at 70% or 100%, they will eventually die.
70% will last longer, however how many have actually had GPU fans die on them? It never happened to me. Aren't fans rated at like 100.000 hours or something?

that is not the point  the point is you are wasting power  once you get into the 90-95%  range  the cooling is not improved and you waste power.

Since the idea of running the gpus is making money  then why waste power by setting them higher then 90%

GPU fans don't consume any significant amount of power. The power draw increase from when a fan isn't spinning to when it goes to 100% does not exceed 4W, and therefore a 10% increase is much less significant. Some fans are event more efficient than that.
Though it is pointless running at 100%.

the power draw  at 90 to 100 is 1 watt  extra per fan  2 fans per card = 2 watts  6 cards  = 12 watts  yeah  maybe all blowers = 6 watts.

10 rigs = 60 to 120 watts  which is 1.5 to 3 kwatts  a day for no purpose. If you run 60 gpus.  Bigger farms  the same thing.  How about a 1000 card farm  set at 90% to 100%  when 80-85 works as well.

 As that boost in fan speed from 90 to 100   does not cool better.

[Elder III]

Put a $20 box fan on the rig. It will lower the temperature of all the GPU's, so you don't need to run the card fans as high. Also cheaper and easier to replace. A box fan will draw about ~75 W, so you need to take than in consideration for your total power draw. I have one box fan on low covering a total of 10 cards on two rigs and all my cards fans are at less 71 Celsius and 70% fan speed. The fans on the cards directly in front of the box fan run at less than 50%

Yes indeed, we have a 20" box fan (2600CFM) set up cooling 2 6 GPU rigs each (2 stacked open air frames) and it works really well in our mining room with a commercial exhaust vent sucking the hot air outdoors on one wall and an open window on the other wall to let fresh air in. That setup is cooling 10 6 GPU rigs quite well and most likely could do double that if we had a bigger electric supply.

[QuintLeo]

I talked to 2 fan sellers, they both said that there was no different between 70% and 100%. If this is true, I would like set the GPU fan speed to 100% to make GPU cooler, what do you think about it?

 Clueless sellers.

 The higher speed DOES increase wear on the bearings (or on the SEALS for sleeve-type and variant-sleeve-type fans like Rifle and FDS etc).

 This WILL cause them to wear out faster.

 It's not a cut-and-dried thing as to HOW MUCH faster they will wear out, though - in particular on fans that NEED seals temperature also plays a factor.

[car1999]

thanks all, I will set my fan to 85% and check the GPU temp.

[carlfebz2]

I talked to 2 fan sellers, they both said that there was no different between 70% and 100%. If this is true, I would like set the GPU fan speed to 100% to make GPU cooler, what do you think about it?

 Clueless sellers.

 The higher speed DOES increase wear on the bearings (or on the SEALS for sleeve-type and variant-sleeve-type fans like Rifle and FDS etc).

 This WILL cause them to wear out faster.

 It's not a cut-and-dried thing as to HOW MUCH faster they will wear out, though - in particular on fans that NEED seals temperature also plays a factor.

Fan sellers will surely told such thing because they would love for you to buy fans over and over again since those fans who are set in 100% will really worn out soo fast compared to those who ran on a lesser percentage. If i were you for OP, better listen to those people who suggested on here since most people here do have experience when it comes to mining. You should lessen up the fan speed, they are just the same better to go below 80%.

[Bare]

in conclusion, never run any fans at 100% it's more damage for no efficiency(or very little)

I try to keep mine usually at 70 or below but never above 75%, yes it's easier to replace fans but that's a bit of a hassle too, isn't it?

rather downvolt your cards instead if your cooler can't handle high temps at 75%

[vapourminer]

yes it's easier to replace fans but that's a bit of a hassle too, isn't it?

when i replaced the fan on my HD6870 i found on it on ebay. took about 10 minutes to swap it out. actually took longer to find it on ebay than to do the replacement.

[Tmdz]

If you feel the need to run them at 100% then you need better cooling, it is as simple as that.

A few C lower temp will not make the gpu last longer, what WILL kill the gpu is inconsistent temps and big swings as well as over temp.