Question about be quiet! Dark Rock 3

I have the Z170 Deluxe and Corsair Vengeance LPX 4x8. There's plenty of room for 2 modules, but with 4 modules, one is actually under the Dark Rock fan. But that's not a big problem, because as Wotan4 already said, you can move the fan a bit (provided the case cooperates) and you can remove it very quickly in two steps if you ever need to take out the memory module. I now have about 3 mm from the fan to the housing.

What RAM do you have exactly?

I had the Dark Rock with Kingston HyperX Fury bars (pretty much the same as the Vengeance LPX) on the Asus Z170 Deluxe and it was a great fit.

You can vary the height of the outer fan by 1-2cm depending on which "fins" you attach it to, and of course it also depends on the height of your case.

The dimensions should be fine. Close, but it should work. It is important that the Dark Rock 3 is mounted in such a way that the fan is at the back, facing the connections...