I have built several dozen PC's for friends and relatives and have experimented with many types of cooling solutions.
I wish I could take you back in 2000 when in Delhi's hot summers, Census data piling was done. That too on terrace, with just a tent for shade, with around 30-40 typists sat, with a fridge in the centre, having all motherboards of ordinary PCs. I don't know how the guy managed long keyboard & monitor wires ... but it was a treat to watch. Even a decade ago, all PCs in HUDCO's office were attached to coolers obviating the need for A/Cs. That's Indian Jugaad at its best