I am using Yate Loon D12SL at 800 and 1200 rpm for my rad testing. For the Monsta I also used 3 Scythe Kaze Maru at 1900 rpm. I only got the radiator, because the rubber pads were not ready yet. I mounted the fans sucking air through the radiator (like I do on all rads), so air flow was not ideal, because there are gaps when using 120 mm fans without the rubber pads. I tried to cover the holes with cardboard, which might have helped a bit, but that solution won't be as good as the pads that will come with the retail model. That means there is probably some performance reserves left, which means it could get closer to the Xchanger 480.