i have a tip for you, use oil, regular mineral oil, a bit messy and hard to clean the MB after use, but, its alot cheaper.
allso, all the capiators (unshore of the english word) contain some sort of liquid, and are made for roomtemp, i dont know what happens to them when the freez at -50..
anyway.. my tip is just lower the MB and cards and stuffs in the oil that holds around -5 centigrade insted, thats more then enuff cooling for any GF card and any nothbrige..
and then use a peltier/sink/whater combination on the cpu, mutch lower temps.
thats my thouts..
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