I think a good route would be to get as efficient a fan-cooled psu you could find and modify it yourself. You can always take the PCBs out of the case and add b

I think a good route would be to get as efficient a fan-cooled psu you could find and modify it yourself. You can always take the PCBs out of the case and add bigger heat sinks, change the TIM under those heat sinks, add water blocks if needed, desolder components and swap with higher wattage components, etc. Or you could just submerge the whole machine in mineral oil. That technique really sucks, though. As cool as it is to have a fully submerged computer, it's hell to clean literal liquid laxative out of a PCIe slot when it's time to upgrade the graphics card.