I bet you wouldn't have trouble cooling a real PDP-11 in a Russian winter. ;)
Some PDP-11's are smaller and cooler than PC's :)
http://pdp-11.org.ru/~form/files/pics/1183/1183-d.jpg
http://pdp-11.org.ru/~form/files/pics/dell.jpg
:)
Are there collectors there that collect the Soviet clones?
I have an UKNC, the soviet computer, small 11/03 clone with second CPU instead
of device controllers and with graphics :)
http://pdp-11.org.ru/~form/files/pics/uknc/NewKMDYK.jpg