- Sep 25, 2011
- Dell Optiplex 9020 MT A25
- i7 4790
- Classic Mac
- Mobile Phone
Great info, thanks! I'll be picking up one of the 80mm Noctuas for the hard drive fan conversion.It looks like my Noctua NF-P12 fan https://www.amazon.com/gp/product/B07CG2PGY6/?tag=tonymacx86com-20
can be manually controlled with the Macs Fan Control app. Auto control doesn't work. So at the lowest speed it runs at a little over 1210 RPM or it goes to the max speed of about 1800. I usually keep it at the lowest RPM. The results should be similar for the 80mm redux fans. The Noctua P12 fans move a lot more air than lower cost off brand fans that sell for 1/2 the price. They also last a really long time with constant use.
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With the CPU fan at max speed of 4481 one of the 4 cores stays around 23C. It's way too noisy spinning that fast so I never leave it there. Good to know that you can cool down quickly if you ever have excess heat issues.
Also of note, the beQuiet 120mm case fan I have is controlled by the custom settings in Macs Fan Control, so you can tie it to a particular sensor temp and set the temp range for the fan speed. Not sure if it is just the fan electronics that allows it to work (likely) or if the 5 pin adapter cable plays a part as well. When I tied it to the hard drive temp, it would spin up as temp increased, no problem. Same with the CPU fan (and you're right, 4k is loud, but it works).
Probably good info to add to the Optimac Golden build guide.