What minimum fan speed do you set your GPU rigs to?

[Dzeronimo]

I did't play with Temp/Fan settings and my cards with modded BIOS runs at 65-69c with a fan speed around 44%.

[Bimmber]

I run my fans at 80% to keep cards cool and gain more hashes. My cards run 38-53 degrees. 1080ti`s

[QuintLeo]

I've heard many different opinions and the last was that you must keep the fans at 100% and this will extend the life span of the gpu's. I run my fans 70% and the temp is around 82c and you could not touch the cards.They're extremely hot. But i think my problem is not from fan adjustment instead of space ventilation. I have placed too many gpu's in one room and have no option to put some king of fan to get our the air. Do you think this temp can cause some damage to the cards - evga 1070 ti.
Cheers!

Most fans used in GPUs don't handle extended time at 100% - the BALL BEARING ones might last a while that way, but far too many GPU makers have moved to cheap sleeve bearing fans that won't last 6 months at 100% and might not last 6 months even at 80%.

Wear is NOT linear with speed, it's more of an exponential function - that last 20% generates MORE wear on the bearings AND SEALS than the first 80% in most cases.
Also, that last 20% generally only adds more like 10% or so to the airflow, normally not worth the wasted power much less the added wear.

CASE fans, especially non-PWM types and anything Rotron/Delta/YS Tech/NMB (couple more I'm forgetting at the moment) ARE normally designed to handle 100% fan speed for extended periods of time.

[Kreso75]

I have Asus GeForce GTX 1080 Ti Turbo GPU's, with auto-fan mining temperature is between 80-84°C, which looks way too high to me.
Putting fans to 100% gives temperature between 49-62°C, but I use NvEZOS as OS (ewbf miner) and don't see any option to lower the temperature with auto-fan (I guess that something about 70°C would be optimal).
Any thoughts?
In NvEZOS OS there is also Claymore miner, should I use it instead of ewbf?

[megainarmy]

I do not know who, what he says, but I think that fans are consumables, so you do not need to save cards.
Accordingly, everything is simple - we always put 100% cooler on video cards and forget about those thoughts!
Replace the cooler from aliexpress is very inexpensive and fast, in case of emergency you can fasten the usual 92x92 or 120x120 cooler on the cards, while waiting for the normal with ali. And if you are lucky and your coolers can be disassembled and not broken, then generally there are no problems, greased and drove on!

[Dzeronimo]

For people with only a few graphics cards (especially if they are not the same) it's not convenient to dive into a risky procedure of changing the fans. Also, they must have a stock of fans or wait a few weeks for Aliexpress to deliver new fans. They will loose too much time and money waiting. Personally, I prefer to stay on the safe side and keep everything running without problem as much is possible, even if I have to sacrifice a few percents of hash rate.

[Kreso75]

So ordering some spare fans for "just in case" would be an good option?
As I can see from Aliexpress, those are from 5-20€/piece.

[sachdientugoogle]

More power consumption. You can normally use 50%-80% fan when mining 24/7. It depends on your cooling setup as you don't need 100% if your ventilation is properly planned. Remember the GPU fan is designed for being in a closed case and most miners are using open air cases.

[oni4an]

Fan speed depends on which room is the farm, closed housing or open, if you have fresh air, air conditioning, the distance between the graphics cards, but in any case from 70 to 90% is acceptable, in this mode if you do Maintenance every 6 months, the fans of video cards long live.

[QuintLeo]

Most of the cards in my riser rigs run at 60% OR LESS fan.
I think the lowest one right now is at 40%, but I'm still in the process of rebuilding my old "folding" rigs into riser rigs.