I have been thinking about some extreme air cooling I have never heard done before. My brother is really into cars - modding them, racing them. Anyway - he bought a pair of electric fans for his intercooler - they are maybe 10" by 10" - something like that - I noticed that they run off the car's 12VDC power supply (battery) - the same a a computer's PCU - I was thinking about cutting a hole in the side of my case adjacent to the face of the motherboard - and installing the fan as a puller - blowing the same air direction as the CPU fan to pull the warm air out of the case - 80 dollars for a fan doesnt seem bad after comparing the price to watercooling kits and computer fans and bigger heat sinks for one made to cool a car's radiator or intercooler - I think it would get the job done - may need its own PCU tho - any thoughts? has this been done?