^^ remember that the max current per-pair of USB ports in each row of a Gekko hub is 6A so having 2 sticks on 1 pair with each pulling 3A or more will make the regulator for that pair of ports shut down and then hopefully restart again. My stick is pulling a safe 2.85A @ 575MHz so when I eventually get a 2nd I'd still be good with 2 in a row.
Yup thank you for pointing that out because I was thinking in my case where until I got new gekko hubs I had to double up at share the 6A which at 550MHz I had all sharing plenty happy with head room.
I have a few that run perfect at 2.85-2.9A but like 2 of them are just bastards that won't be stable unless they jump between 2.98-3.08A. Those I have labeled in case one of the hubs has to be doubled up for that exact reason.
as you can see here i have only one stick with one fan connected to each pair:
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0: GSF: port 7 (compac f) <-> port 6 (fan)
1: GSF: port 5 (compac f) <-> port 2 (fan)
2: GSF: port 4 (compac f) <-> port 3 (fan)
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I am running 12 sticks all at 575MHz, as you can see in my previous pictures only 5 or 6 have Noctua fans, the rest are only cooled by a Noctua fan on top of them blowing down.
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which usb ports do you have the big fans connected to?
as i can see from your pictures, they are not connected to the gekko usb hub