The minimalist build's hardest part is the cooler choice. The X3D doesn't need an AIO; the NH-D15 G2 dissipates 200 W silently and is rated for the next decade of CPUs. The Fractal North is the case that makes a PC look like a piece of furniture rather than a piece of gaming gear: walnut accent, mesh side panels for thermal performance, no glass to reflect a desk lamp at 2 a.m.