Oh, the demo rig we have right now has completely adequate cooling capacity for overclocking – and that's with an i9 and Titan XP! Thicker, denser radiators are best in terms of building up robust cooling capacity, and the MachOne is peerless with respect to this, in its size class.
That doesn't mean that anything can be overclocked in it, but the limit is very, very high. I do think that anything you can fit can be adequately cooled at stock. In any case, we will be doing thermal testing soon to better understand exactly how well the enclosure performs, across hardware selection and available configurations. Our goal is to be very prescriptive in terms of what cooling solutions work best for certain component choices.
The guys above explain math, and all of this is before we calculate the case restrictions in, wich it have with all this small holes. I really dig this design, thats why i have shift X wich i am leaving now due zero airflow and push pull would not help much more. Anyway, even if your case have more airflow, i suspect you can get everything cooled with one 280 rad. Maybe you can - on 2000 rpm, wich is not very nice to hear beside your ear.
Putting 5.2 inside - hmm ... You think we really need reservoirs ?? I would rather to see place for fill port and bleed port and thats enough, wich again - would bring some space up there .
Why is no holes on bottom ?? there you should squeze 1x120 at least.
In what way? The DA2 can support ATX power supplies, and their (quite clever) rail system means there's much more granular control of the positioning of components. However, the MachOne is less than 6% larger and has a smaller footprint, while supporting much more hardware - thick radiators, dedicated pump/reservoir units and mATX support put it in a different class entirely.
With DA2 , you can throw components left and right to fit more cooling, with using sff gpu, like zotac 1080 ti mini and available water block for example. You can make sandwich of 3 vents and 2x140 rads with no other components on the way. That is huge advantage.
Your case can not exploit case of using small gpu's wich i think most of people already have or will have.
mATX support is your advantage clearly, but how will someone cool 2x serious vga ?? i doubt it can cool one, let alone 2.