If you're into fully fanless PCs and don't mind paying a premium, Monster Labo are the only ones to my knowledge selling cases capable of dissipating the 300W+

If you're into fully fanless PCs and don't mind paying a premium, Monster Labo are the only ones to my knowledge selling cases capable of dissipating the 300W+ that a full gaming desktop will generate: https://www.monsterlabo.com/shop https://www.monsterlabo.com/shop