i just gone full Noctua in my SFF build and im finding at about 40% PWM in my intake fans i get noise from the case grills, its a well known problem.
i decided to have a look for the 5mm spacers you can get that completely remover the fan noose and errr WOW they range from £12 to £21 each, with the cheaper been mostly out of stock
i wont be paying £63 + postage for 3 x 5mm spacers, as anyone used a alternative they can recommend
spacer in question
Noctua NA-IS1-12 Sx2 Inlet Side Spacers for 120mm Fan Beige/Brown
i decided to have a look for the 5mm spacers you can get that completely remover the fan noose and errr WOW they range from £12 to £21 each, with the cheaper been mostly out of stock
i wont be paying £63 + postage for 3 x 5mm spacers, as anyone used a alternative they can recommend
spacer in question
Noctua NA-IS1-12 Sx2 Inlet Side Spacers for 120mm Fan Beige/Brown