Just a qucik thought that popped into my head earlier, not given it more than 2 mins thought so it might be mad but what if you get all ur boards and everything into the smallest box u can like a waterproof electrical connection box, seal all the inlets and wire entrys with submergable grommets and then put the box under a low vaccum. So now weve got a box with very little in the way of moisture and no entrys (chuck a few silica packs in for good luck if needs be). Then on top of the cpu and vgu chip you run a copper cooling element along the top of the box and insulate the exterior of the case. In theory you could keep every component under zero degrees with no condensation, you dont even have to use a special chiller just stick the whole lot in an old mini freezer lol obviously hard drive , cd drives etc need to stay out and a few ports will need extension looms but it would be awsomley cheap to cool below zero. Im working on a system at the moment as a sideproject that will cool below -30 with not expendables like nitrogen or dry ice and no crazy peltiers
