Fan curve question: When should my fans hit 100%

Hey Folks. I just got my new Velox machine. It's a lovely PC. I'll post some pictures soon!

I noticed that the fans keep changing speeds when I'm doing really basic operations. For example, while idling the fans are only 600 RPM. However, if I do just about anything, like open a simple web page, the fan speed kicks up noticeably. This causes the fan speed to bounce up and down constantly while doing basic (non-gaming) tasks.

So, I started tweaking the fan curves. The default curves have the fans running at 600 RPM while idling, and they ramp up to 1500 RPM once the CPU hits 40 C. I changed the curve, so that it ramps up to full speed by 50 C. That fixed a lot of the fan speed fluctuation, but I'd still like to smooth it out.

I have a couple of questions:

1) What's a good temperature for 100% fan speed? I'd like to set it to the highest reasonable temperature, well within recommended CPU temperature limits.

2) Would there be much harm in lowering the max fan speed to something like 1200 RPM, rather than 1500 RPM? I guess I should just try, and see how hot it gets.

By the way, this is an air-cooled machine, with a huge Noctua NH-D15S cooler. It has an Intel 11900K CPU.

Thanks for your help.

Edited by JamesAstro - 10 Aug 2021 at 6:25pm

Thanks Snaike. That's exactly what I was looking for. I'll try that later tonight, and report back.

:)

The program Im using is set directly on the GPU. Since that is the part of the machine that is going to get the hottest the quickest, AFAIK. If your CPU starts hitting those kinds of temps there is a much bigger problem than fan speed....