got a Gridseed miner from Gaw Miners
connected everything etc

once i had this thing one, the fan took off like a rocket ship, it was freaking loud
so the 1st thing i did was disassemble the whole miner (fan and heatsink)
then i just removed the fan including the red/black wires and put a Scythe Gentle Typhoon at it (roughly 30cm from the miner) at low speed (700rpm)

so i fired it up again and i put the freq at 875mhz and i dont hear any noises (except for my pc)
its now doing 388kh/s on Multipool (EU Server)

already bought a new miner and i will do the same with that one, removing the fan so i only have the pcb and the heatsink