On Feb 21, 5:07*pm, Bob La Londe wrote:
How much real cooling can you get with the cheap peltiers you find for
sale on Ebay. *My shop gets pretty hot in the summer, but its just not
practical to keep my controller computers in the office. *I was
thinking about making mini duct/shrouds to draw air over the cold side
of a peltier into the PC cases.

I'd go water cooled. There are plans on the net if you don't want to
buy new.